Question bank

Chapter-1   Transport of Food and Minerals in Plants
Q-1 Fill in the blanks
(1). Ascent of sap in tall plants happens through ____________
(2). Plasma membranes are ____________
(3). Of all the water absorbed by a plant percentage used in photosynthesis is ____________
(4). On a windy day transpiration is likely to be ____________
(5). The movement of water in xylem is ____________ directional.
(6). Tracheids and vessels make ____________
(7). Xylem parenchyma are ____________
(8). The epidermis on the roots are made of ____________ layer/layers.
(9). We see imbibition in ____________
(10). A symptom of zinc deficiency in plants is ____________
Q-2 Match the descriptions with the terms
Q-3 State True or False and correct the false statement giving reasons
(1). In Spirogyra, the movement of substances is by active transport.
(2). In diffusion, molecules move from higher to lower concentration.
(3). Openings on the surfaces of leaves are called sieve pores.
(4). The large vacuoles in root hair cells have no real use.
(5). Phloem is responsible for upward conduction of water and mineral salts.
(6). Dry raisins kept in strong saline solution will swell quickly.
(7). Root hairs contain solutions with high solute content than the soil.
(8). Transpiration from trees would be high during the monsoon season.
(9). On a humid day transpiration is usually high.
(10). Nitrogen, Phosphorus and Potassium (NPK) are micronutrients.
Q-4 Short answer type questions
(1). What could happen if roots did not have root hairs?
(2). What are the xylem vessels composed of?
(3). What is a semipermeable membrane?
(4). What is meant by vascular cylinder?
(5). Name the different element of phloem vessels.
(6). Why is the translocation of food in phloem not unidirectional?
(7). What are annual rings?
(8). Name the three processes by which plants absorb things from the soil.
(9). Why some minerals are called micronutrients?
(10). Where do we use the term translocation?
Q-5 Long answer type questions
(1). Explain briefly about the elements of xylem vessels.
(2). Explain briefly about the element of phloem vessels.
(3). How are the minerals absorbed by the plants?
(4). Explain how water reaches from the soil to the root xylem?
(5). How are xylem vessels different from phloem vessels?
(6). Which factors affect transpiration in plants?
(7). How does ascent of sap actually happens in plants?
(8). The elements of phloem are living tissues. How is this important for translocation?
(9). How do the plants benefit from transpiration?
(10). Why are the “NPK” fertilizers important for plants?
Multiple Choice Questions
Q-1 Which of the following statement is correct for diffusion:

(i)

Diffusion ends when concentration in one part has more solute.

(ii)

Diffusion happens through selectively permeable membrane.

(iii)

Root hairs absorb minerals by the process of diffusion.

(iv)

Diffusion ends when the solution becomes uniform.

Q-2 Transpirational pull is initiated at the –

(i)

Stem

(ii)

Roots

(iii)

Xylem

(iv)

Leaves

Q-3 Exchange of gases occur through small openings on the tree barks is called

(i)

Small pores

(ii)

Stomata

(iii)

Mitochondria

(iv)

Lenticels

Q-4 Root hairs are able to absorb a lot of water because:

(i)

They have pointed ends

(ii)

They are close to the soil surface

(iii)

They help in transpiration from the roots

(iv)

They have a large surface area

Q-5 Xylem parenchyma are :

(i)

Dead non-lignified cells

(ii)

Dead lignified cells

(iii)

Living cells

(iv)

Form the wood cells
Q-6 In diffusion the movement of molecules happen because of

(i)

Air currents

(ii)

Gravitational force

(iii)

Magnetic force

(iv)

Brownian movement

Q-7 We can define transpiration as :

(i)

Loss of water from the roots of a plant

(ii)

Loss of water after cutting a plant part

(iii)

Loss of water from the aerial parts of a plant

(iv)

Loss of water from the aerial part of the plant as water vapour

Q-8 Phloem being a part of the vascular bundle:

(i)

Extends all over the plant

(ii)

Extends only up to the stem

(iii)

It extends only half, as much as xylem

(iv)

It is present where xylem is absent
Q-9 Which of the following is not a consequence of transpiration?

(i)

The plants experience a cooling effect.

(ii)

Salt –water balance is maintained in the cell sap.

(iii)

Rain happens in the forest areas.

(iv)

Root pressure is created.

Q-10 Which of the following happens by active transport?

(i)

Entry of air through the stomata

(ii)

Absorption of minerals by the roots

(iii)

Transpiration from the leaves

(iv)

Creation of root pressure
Chapter-2   Reproduction in Plants
Q-1 Fill in the blanks
(1). Starfish and Planaria reproduce asexually by _____________ .
(2). The ‘eyes’ in the potato are _____________ .
(3). Part of the flower that forms the fruit is _____________.
(4). Fusion of the male and female gamete is called _____________ .
(5). The reproductive stem of grass is called _____________
(6). In adverse conditions the amoeba forms a protective structure called _________
(7). The whorls of a flower rest on _____________.
(8). The pollination in dioecious flowers is _____________ .
(9). After fertilization the zygote develops in to an _____________.
(10). Water lily is pollinated by _____________ .
Q-2 State True or False for the following and correct the false statements giving reasons
(2). In cutting – propagation a new variety is obtained.
(3). The spores of Ferns leads to asexual reproduction.
(4). If the tuber is differentiated into nodes and internodes it must be a root tuber.
(5). Fruits of a plant produced by grafting will be the same as that of the parents.
(6). Flower with all the whorls is likely to be unisexual.
(7). After repeated vegetative reproduction the plant vigor can fall.
(8). Pollen transfer from a flower to stigma of another flower on a different plant happens in cross pollination.
(9). Zygote is formed when pollen grains land on the stigma.
(10). The seeds in a fruit develop from the ovules.
Q-3 Short answer type questions
(1). What is asexual reproduction?
(2). Give an example of tuber, bulb, rhizome and corm (underground stems).
(3). What is a complete flower?
(4). Give one difference between stem tuber and root tuber.
(5). Give two disadvantages of vegetative propagation.
(6). Name the parts of stamen and carpel.
(7). Write a short note on micro-propagation.
(8). Why is lotus pollinated by insects?
(9). What are pollinating agents?
(10). What is artificial pollination?
Q-4 Long answer type questions
(1). Explain the process of budding in yeast.
(2). What are the economic benefits of vegetative reproduction?
(3). What are the differences between unisexual and bisexual flowers?
(4). Explain spore formation in fungi and its importance for the organism.
(5). Explain the process of grafting and its importance.
(6). What are the characteristics of a wind pollinated flower?
(7). Explain the characteristics of an insect pollinated flower.
(8). Explain the process of fertilization.
(9). Differentiate between self and cross pollination in plants.
(10). Describe the changes that happen after fertilization is over in plants.
Multiple Choice Questions
Q-1 Which of the following is not a part of ‘asexual reproduction’?

(i)

Fragmentation

(ii)

Spore formation

(iii)

Fertilization

(iv)

Multiple fission
Q-2 In binary fission way of asexual reproduction:

(i)

First the genetic material is duplicated

(ii)

First the cytoplasm divides

(iii)

The cytoplasm and genetic material divide together

(iv)

In favourable condition the cytoplasm divides first
Q-3 The plants produced by vegetative propagation are;

(i)

Different from the parent

(ii)

Exactly same as the parent

(iii)

Better adapted than the parent

(iv)

It cannot be predicted
Q-4 Which of the following is a method of artificial propagation in plants?

(i)

Budding

(ii)

Fragmentation

(iii)

Layering

(iv)

Spore formation
Q-5 Which of the following sentences describes pollination correctly?

(i)

Pollen grains are released into the wind.

(ii)

Pollen grains are transferred into the ovule.

(iii)

Pollen grains are transferred on the stigma.

(iv)

Zygote is formed after fertilization.
Q-6 If it is a wind pollinated plant:

(i)

The flowers will be large and bright

(ii)

Large amounts of pollen grains would be produced.

(iii)

The pollen grains will have water resistant coating.

(iv)

The pollen grains will be sticky

Q-7 Asexual reproduction by spores is seen in

(i)

Spirogyra

(ii)

Fern

(iii)

Mosses

(iv)

Fungi

Q-8 Layering is done on-

(i)

Stem

(ii)

Root

(iii)

Leaf

(iv)

Buds
Q-9 The carpel in a flower comprises of

(i)

Stigma, pollen and pollen tube

(ii)

Stigma, style and ovary

(iii)

Stigma, anther and ovary

(iv)

Anther, style and ovary
Q-10 Feathery stigma can be seen in –

(i)

Water pollinated flowers

(ii)

Flowers pollinated by butterflies

(iii)

Wind pollinated flowers

(iv)

Flowers pollinated by animals
Chapter-3   Reproduction in Humans
Q-1 Fill in the blanks
(1). The testes are located outside the abdominal cavity in the _________.
(2). Another name of sperm duct is _________.
(3). The embryo gets embedded in the wall of the uterus it is called _________.
(4). A gland that encircles the base of urethra _________
(5). At the ovary end the fallopian tubes are shaped like a _________.
Q-2 Match the following
Q-3 State True or False and correct the false statements giving reasons
(1). The nucleus in a sperm cell lies in its tail.
(2). The fallopian tubes produce the egg in humans.
(3). In males the sperms come to the epididymis
(4). The fertilization in humans is internal.
(5). The temperature in the scrotum is higher than the body temperature.
Q-4 Short answer type questions
(1). Why is reproduction important for living organisms?
(2). What are the carriers of male and female gamete in humans?
(3). Define sperm and ova.
(4). Describe the position of ovaries in humans.
(5). What is the importance of epididymis?
Q-5 Long answer type questions
(1). Why is the testes in humans located outside the body?
(2). Explain the process of fertilization and implantation in humans
(3). Describe the steps involved in fertilization in humans.
(4). Explain the functions of ovary and uterus.
(5). Describe the human male reproductive system in brief.
Multiple Choice Questions
Q-1 Normally fertilization in humans occur in the

(i)

Uterus

(ii)

Ovary

(iii)

Cervix

(iv)

Fallopian tube

Q-2 The uterus can be described as

(i)

Muscular tube

(ii)

Pear shaped hollow muscular bag

(iii)

Cylindrical structure

(iv)

Highly coiled structure
Q-3 In humans each ovary produces

(i)

One egg every alternate day

(ii)

One egg every alternate week

(iii)

One egg every alternate month

(iv)

One egg every month
Q-4 Which of the following sentences is correct about fertilization process:

(i)

The sperms released in the vagina move to the ovary.

(ii)

Out of the millions of sperm released in the vagina few sperms fuse with the ovum.

(iii)

One egg is produced by the ovaries every month

(iv)

Head of the sperm containing the nucleus penetrate the egg.

Q-5 From zygote formation to embryo formation it takes :

(i)

280 days

(ii)

Nine weeks

(iii)

One month

(iv)

Five to six days

Chapter-4   Ecosystems
Q-1 State true or false for the following and correct the false statements giving reasons
(1). Tigers are primary consumers.
(2). Canopy in a forest is formed mostly by shrubs.
(3). Rhizobium found in the roots are parasites.
(4). In predation the prey is harmed.
(5). Energy flow in an ecosystem is bi-directional.
Q-2 Fill in the blanks
(1). The living components of an ecosystem are called _____________ factors.
(2). Processes that help in soil formation are weathering and __________ .
(3). Bird making a nest on a tree is an example of _____________ .
(4). Sunlight is most intense in the _____________.
(5). Decomposers feed on _____________.
Q-3 Match the two columns
Q-4 Short answer type questions
(1). Who are the primary consumers?
(2). How can humans be primary consumers?
(3). Why a quaternary consumer will not have a predator?
(4). What is a predator?
(5). What is meant by pyramid of numbers?
Q-5 Long answer type questions
(1). Why there are no more than 4 tropic levels of consumers in a food chain ?
(2). What is a food chain, how is it linked to energy flow in nature?
(3). Symbiosis is interdependence; what are its types?
(4). Why energy flow in a food chain decreases at every tropic level?
(5). How scavengers and decomposers keep the environment clean?
Multiple Choice Questions
Q-1 Which of the following is not a biotic component?

(i)

Grass

(ii)

Peacock

(iii)

Sunlight

(iv)

Frog
Q-2 Herbivores fall under the group of :

(i)

Producers

(ii)

Consumers

(iii)

Autotrophs

(iv)

Scavengers
Q-3 Which of the following is not affected by high humidity?

(i)

Decomposition

(ii)

Growth of fungi

(iii)

Dispersal of pollutants

(iv)

Growth of bacteria
Q-4 The forest floor receives very little light hence there is :

(i)

Dense growth of plants

(ii)

There is little growth of plants

(iii)

Most birds live here

(iv)

Lots of water accumulates here
Q-5 The dead remains of plants and animals are converted to humus by:

(i)

autotrophs

(ii)

heterotrophs

(iii)

decomposers

(iv)

scavengers
Chapter-5   Endocrine System and Adolescence
Q-1 Fill in the blanks
(1). The hormones work on a system of ___________.
(2). The hormone that converts glycogen to glucose is ___________ .
(3). Hormone that regulates basal metabolic rate is ___________.
(4). ___________ is a condition when adults suffer from severe thyroxine deficiency.
(5). Adrenocorticotropic hormone (ACTH) is secreted by ___________.
Q-2 Match the endocrine glands with their location
Q-3 State True or False and correct the false statements giving reasons
(1). Exocrine glands have ducts.
(2). Endocrine secretions have short term effects.
(3). In adolescence as the larynx grows the vocal folds also grow thicker and longer.
(4). The growth of body hair is an example of secondary sexual character.
(5). Glycogen is converted back to glucose with the help of insulin.
Q-4 Short answer type questions
(1). What is a gland?
(2). What is meant by “fight or flight” situation?
(3). What are hormone receptors?
(4). What is cretinism?
(5). What is the function of FSH hormone?
Q-5 Long answer type questions
(1). Differentiate between endocrine and exocrine glands with examples.
(2). Explain the working of the endocrine system.
(3). What are the effects of thyroxine deficiency in humans? Explain in brief.
(4). What is the importance of the endocrine functions of pancreas?
(5). What are the emotional changes that happen during adolescence?
Multiple Choice Questions
Q-1 Pituitary gland is controlled by the hypothalamus in the brain. This indicates that:

(i)

The pituitary gland is not so important.

(ii)

The endocrine system works independently.

(iii)

The nervous and endocrine systems are interlinked.

(iv)

The nervous system works independently.
Q-2 When thyroxine secretion is less :

(i)

Metabolic rate increases

(ii)

Metabolic rate declines

(iii)

Metabolic rate is not affected

(iv)

Pituitary secretion increases
Q-3 Goitre can be avoided by taking

(i)

Avoiding sugar

(ii)

Taking a balanced diet

(iii)

Doing physical exercise

(iv)

Iodized salt

Q-4 The symptoms of cretinism are

(i)

Accelerated growth and excessive sugar in the blood

(ii)

Premature puberty in children

(iii)

Stunted growth and mental retardation

(iv)

Thickened skin with fluid retention
Q-5 Which of the following is not a change that happens because of adolescence?

(i)

Growth spurt in height and weight happens.

(ii)

The larynx grows in size.

(iii)

Secondary sexual characters develop during this age.

(iv)

Some teenagers develop diabetes.

Chapter-6   Nervous System
Q-1 Fill in the blanks
(1). Medulla oblongata extends to become the ___________.
(2). The CNS comprises of ___________ .
(3). Heartbeat is controlled by ___________ .
(4). The brain is covered by three layers of ___________ .
(5). Reddening of the face caused by embarrassment is a reflex action called ___________ .
Q-2 State true or false and correct the false statements giving reasons
(1). Synapse formation can be seen between two axons.
(2). The peripheral nervous system connects CNS to all parts of the body.
(3). The cerebrum has no role in a reflex action.
(4). Axons are covered by a fatty, insulating layer called myelin sheath.
(5). The left and right brain are connected by pons.
Q-3 Short answer type questions
(1). Why there is no mixing of impulses between nerve cells?
(2). What is a synapse?
(3). What are the functions of the medulla oblongata?
(4). What is somatic nervous system?
(5). What is enteric nervous system?
Q-4 Long answer type questions
(1). Describe the structure of a neuron cell.
(2). How can we say that the brain is very well protected?
(3). Why neurons are considered as functional units of the nervous system?
(4). What is ‘reflex action’? Explain with an example.
(5). What are the major parts of human brain? Explain briefly.
Multiple Choice Questions
Q-1 The membranous covering of the brain is/are called :

(i)

Meninges

(ii)

Cranium

(iii)

Pons

(iv)

Medulla
Q-2 Grey matter is found in

(i)

Inner part of cerebrum and inner part of spinal cord.

(ii)

Only in the cerebrum.

(iii)

Only in the spinal cord.

(iv)

Outer part of cerebrum and inner part of spinal cord.

Q-3 Which of the following is not a function of the spinal cord?

(i)

To control all involuntary action in the body.

(ii)

To send sensory information from the muscles and the skin to the brain.

(iii)

To send motor commands from the brain to the muscles and the skin.

(iv)

To coordinate reflexes, below the neck.
Q-4 Cerebrospinal fluid is found -

(i)

Inside the brain

(ii)

Inside the spine

(iii)

Between the brain and the spine

(iv)

Between the meninges

Q-5 The reflex action can be termed as :

(i)

Involuntary action

(ii)

Voluntary action

(iii)

Mixed action

(iv)

It can only be called reflex action
Chapter-7   The Circulatory System
Q-1 Fill in the blanks
(1). The human heart is enclosed in a membrane called ___________.
(2). The lymph moves in the lymphatic system because of ___________ .
(3). The rhythmic movement in the heart is triggered by ___________ .
(4). Antibody of Antigen A will be ___________ .
(5). Palpitation can be caused because of ___________.
Q-2 Match the biological facts with their correct reasons
Q-3 State True or False and correct the false statements giving reasons
(1). The heartbeat in the human heart is triggered by the mitral valve .
(2). People having blood group AB, are universal donors.
(3). Pulmonary vein is the doorway to systemic blood circulation.
(4). Blood moves in veins from thick blood vessels to thin blood vessels.
(5). Hypertension can be managed by keeping a simple lifestyle.
Q-4 Short answer type questions
(1). Name the three types of blood vessels in humans.
(2). Where can we find pericardial fluid? How is it useful?
(3). What is the function of valves in the veins?
(4). Mention two differences between arteries and veins.
(5). How is tissue fluid useful?
Q-5 Long answer type questions
(1). What is double circulation? Explain in brief.
(2). Explain the movement of blood on the “right side of the heart”.
(3). How is the ‘ABO’ blood grouping done?
(4). Why lymphatic system is called a parallel circulatory system?
Multiple Choice Questions
Q-1 What divides the heart into the left and the right side?

(i)

Atrioventricular septum

(ii)

Interatrial septum

(iii)

Interventricular septum

(iv)

Interatrial septum and Interventricular septum

Q-2 An important difference between auricles and ventricles is-

(i)

Ventricles are more muscular

(ii)

Auricles are larger in size

(iii)

Auricles are more muscular

(iv)

Ventricles are surrounded by pericardium
Q-3 Oxygenated blood is received for the first time in the heart at the :

(i)

Left auricle

(ii)

Left ventricle

(iii)

Right auricle

(iv)

Right ventricle
Q-4 The electrical impulses in the heart can be recorded by a device called

(i)

Stethoscope

(ii)

Treadmill machine

(iii)

Sphygmomanometer

(iv)

Electrocardiograph

Q-5 Which of the following is a function of the lymphatic system?

(i)

It is a carrier of nutrients and oxygen.

(ii)

It protects the body against infections.

(iii)

It helps in blood clotting.

(iv)

It is a part of the cardiovascular system.
Chapter-8   Health and Hygiene
Q-1 Fill in the blanks
(1). Splint can be used as first aid in case of _____________.
(2). A first degree burn affects the _____________.
(3). Immunity by a vaccine is against _____________.
(4). Disease caused by heavy chronic alcohol use _____________.
(5). Dengue and influenza are caused by _____________.
Q-2 Match the two columns
Q-3 State True or False and correct the false statements giving reasons
(1). Dengue is a vector borne disease; so is measles.
(2). In herd immunity 25% of the people must have immunity.
(3). Isolating a patient can prevent the spread of communicable diseases.
(4). Food discipline can improve general immunity.
(5). Vaccines often cause disease.
Q-4 Short answer type questions
(1). What is a communicable disease?
(2). What are antigen and antibodies?
(3). What do you understand by the term hygiene?
(4). How wearing a mask is useful to prevent spread of diseases?
(5). What is the first aid for superficial bleeding?
Q-5 Long answer type questions
(1). What are the different modes of spread of infectious diseases?
(2). Vaccines are dangerous because they contain germs. Explain how it is untrue.
(3). How vector control can prevent the spread of certain diseases?
(4). What is meant by immunity?
(5). How is tobacco consumption harmful?
Multiple Choice Questions
Q-1 Which of the following defines infectious disease?

(i)

Disease with pain and swelling

(ii)

Disease caused by alcohol addiction

(iii)

Disease caused by nutritional deficiency

(iv)

Disease caused by microbes

Q-2 Which of the following is the right initiative to prevent dengue?

(i)

Boiling drinking water

(ii)

Brushing teeth twice daily

(iii)

Drying all puddles of water

(iv)

Washing hand with soap
Q-3 Which of the following disease can be prevented by vaccination?

(i)

Tetanus

(ii)

Malaria

(iii)

Dengue

(iv)

Aids
Q-4 Which of the following is not included in food discipline?

(i)

Consumption of tobacco

(ii)

Consumption of a balanced diet

(iii)

Eating fruits and vegetables regularly

(iv)

Keeping cooked food in covered containers
Q-5 Vaccines provide immunity by :

(i)

Producing antigen in the body

(ii)

Producing antibody in the body

(iii)

Producing WBC in the body

(iv)

Producing pathogens in the body
Chapter-9   Food Production
Q-1 Fill in the blanks
(1). A fungi used in bakeries ______________.
(2). In wine industry, yeast is used for ______________.
(3). An example of zaid crop is ______________.
(4). An example of cash crop ______________.
(5). Conventional farming leads to increased ______________.
Q-2 Match the two columns
Q-3 State True or False and correct the false statements giving reasons
(1). Crops that are grown primarily to sell are called cash crops.
(2). A good rain in winter usually good for Rabi crops.
(3). The milk giving animals are called poultry.
(4). Mugga is a variety of fish.
(5). Most microorganisms can easily grow in honey
Q-4 Short answer type questions
(1). List three uses of bacteria in the food industry.
(2). What is the benefit of using Lactobacillus granules as medicine?
(3). Why is organic farming considered eco-friendly?
(4). What are the benefits of pisciculture?
(5). In pisciculture, how can we keep the water clean?
Q-5 Long answer type questions
(1). How are fungi useful in food production?
(2). What have been the benefits of Green Revolution?
(3). What is Mariculture?
(4). What were the main factors responsible for the success of Green Revolution?
(5). What are the benefits of White Revolution to the society?
Multiple Choice Questions
Q-1 Yeast makes the dough fluffy by producing:

(i)

Alcohol

(ii)

Oxygen

(iii)

Water vapour

(iv)

Carbon dioxide

Q-2 Which of the following is a kharif crop?

(i)

Paddy

(ii)

Wheat

(iii)

Gram

(iv)

Peas
Q-3 Growing of different crops in a planned succession is called

(i)

Intercropping

(ii)

Mixed cropping

(iii)

Organic farming

(iv)

Crop rotation

Q-4 Which of the following is not obtained from an apiary?

(i)

Honey

(ii)

Beeswax

(iii)

Royal jelly

(iv)

Nectar

Q-5 Where would you find Rhizobium ?

(i)

In the roots of legumes

(ii)

In the honeybees

(iii)

In yeast cultures

(iv)

In mushrooms roots