Class 10 Biology Sample Paper – RBSE – 50 Questions

Question 1

Which of the following processes is NOT a part of nutrition in amoeba?

Accepted Answer

Photosynthesis

Question 2

Where does the complete digestion of carbohydrates, proteins, and fats occur in the human digestive system?

Accepted Answer

Small intestine

Question 3

Which of the following statements is true about aerobic respiration?

Accepted Answer

It produces a large amount of energy.

Question 4

Which component of blood is responsible for clotting?

Accepted Answer

Platelets

Question 5

The process of transport of food from the leaves to other parts of the plant is called:

Accepted Answer

Translocation

Question 6

What is the main function of the kidneys in the human body?

Accepted Answer

Filtering waste products from the blood

Question 7

Which plant hormone promotes cell division?

Accepted Answer

Cytokinin

Question 8

The structural and functional unit of the nervous system is the:

Accepted Answer

Neuron

Question 9

A sudden action in response to something in the environment that does not involve conscious thought is called a:

Accepted Answer

Reflex action

Question 10

Which gland is known as the 'master gland' of the endocrine system?

Accepted Answer

Pituitary gland

Question 11

Insulin is a hormone produced by the pancreas that regulates:

Accepted Answer

Blood sugar levels

Question 12

Asexual reproduction involving the breaking of a simple multicellular organism into two or more pieces upon maturation, each of which develops into a new organism, is called:

Accepted Answer

Fragmentation

Question 13

Vegetative propagation by layering is commonly used for which plant?

Accepted Answer

Jasmine

Question 14

What is the transfer of pollen grains from the anther to the stigma of a flower called?

Accepted Answer

Pollination

Question 15

In humans, where does fertilization typically occur?

Accepted Answer

Fallopian tube (oviduct)

Question 16

Which of the following is a barrier method of contraception?

Accepted Answer

Condom

Question 17

Who is known as the 'Father of Genetics'?

Accepted Answer

Gregor Mendel

Question 18

An organism's observable characteristics, resulting from the interaction of its genotype with the environment, is called its:

Accepted Answer

Phenotype

Question 19

In humans, the sex of a child is determined by the chromosomes contributed by the:

Accepted Answer

Father only

Question 20

Which of the following is an example of a variation that is not inherited?

Accepted Answer

Skin color due to tanning

Question 21

The concept that individuals better adapted to their environment are more likely to survive and reproduce is known as:

Accepted Answer

Natural selection

Question 22

Which of the following would be considered a producer in an ecosystem?

Accepted Answer

Grass

Question 23

In a food chain, if a hawk eats a snake, and the snake eats a frog, and the frog eats an insect, what trophic level does the hawk occupy?

Accepted Answer

Tertiary consumer

Question 24

Which environmental problem is primarily caused by the accumulation of chlorofluorocarbons (CFCs) in the atmosphere?

Accepted Answer

Ozone depletion

Question 25

Which of these is a biodegradable waste material?

Accepted Answer

Vegetable peels

Question 26

The primary site of gaseous exchange in the human respiratory system is the:

Accepted Answer

Alveoli

Question 27

What is the main function of bile juice, secreted by the liver?

Accepted Answer

Emulsification of fats

Question 28

Which part of the brain is responsible for maintaining posture and balance of the body?

Accepted Answer

Cerebellum

Question 29

The xylem in plants is responsible for the transport of:

Accepted Answer

Water and minerals

Question 30

Which of the following represents the correct path of urine flow in the human excretory system?

Accepted Answer

Kidney → Ureter → Urinary bladder → Urethra

Question 31

Which plant movement is a growth response towards light?

Accepted Answer

Phototropism

Question 32

Which part of the flower develops into a fruit after fertilization?

Accepted Answer

Ovary

Question 33

The number of autosomes in a human male is:

Accepted Answer

22 pairs

Question 34

What is the primary role of decomposers in an ecosystem?

Accepted Answer

To break down dead organic matter and return nutrients to the soil

Question 35

Which of the following is a symptom of iodine deficiency?

Accepted Answer

Goitre

Question 36

The green pigment found in plants, essential for photosynthesis, is called:

Accepted Answer

Chlorophyll

Question 37

Which hormone is responsible for the 'fight or flight' response in humans?

Accepted Answer

Adrenaline

Question 38

The protective outer layer of the brain is called the:

Accepted Answer

Meninges

Question 39

Which of the following diseases is NOT sexually transmitted?

Accepted Answer

Tuberculosis

Question 40

What is the phenomenon where a broken body part of an organism can regenerate into a complete new individual?

Accepted Answer

Regeneration

Question 41

The primary function of villi in the small intestine is to:

Accepted Answer

Increase the surface area for absorption of digested food

Question 42

Which of the following is a abiotic component of an ecosystem?

Accepted Answer

Water

Question 43

What is the role of stomata in plants?

Accepted Answer

Exchange of gases and transpiration

Question 44

The process of releasing energy from food in the absence of oxygen is called:

Accepted Answer

Anaerobic respiration

Question 45

Which part of the human heart receives deoxygenated blood from the body?

Accepted Answer

Right atrium

Question 46

Which enzyme in the stomach is responsible for protein digestion?

Accepted Answer

Pepsin

Question 47

The function of the spinal cord is to:

Accepted Answer

Transmit nerve impulses between the brain and the rest of the body and mediate reflex actions

Question 48

If a tall pea plant (TT) is crossed with a dwarf pea plant (tt), what will be the phenotype of the F1 generation?

Accepted Answer

All tall

Question 49

What is meant by homologous organs?

Accepted Answer

Organs that have different functions but similar basic structures, indicating common ancestry

Question 50

Which of the following organisms shows budding as a method of asexual reproduction?

Accepted Answer

Hydra

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