AP Class 10 Model Paper 2021 Biological Studies Set 2

MODEL PAPER 2
GENERAL SCIENCES – PAPER II
Time : 2 hrs 45 min Max marks: 50

Instructions:

1. First 15 minutes are meant for reading the question paper, and remaining
2:30 minutes are for writing the exam.
2. Answer all questions in the booklet given.
3. The question paper contains four sections.
4. Only section four has internal choice.

SECTION – I 12X ½= 6 MARKS

Note: Answer all the questions. Each question carries ½ marks.

1. Kwashiorker is due to deficiency of

a) protein b) calorie c) vitamins d) minerals

2. Expand ATP.

3. I am the smallest cell in the body. I have a long tail. I move towards the ovum and
fertilize it. Who am I?

4. Pleura : lungs :: _____________: heart.

5. Identify the correct sequence

Grass-> Rabbit-> lion-> fox

phytoPlankton -> small fish -> large fish -> eagle.

6. Dialysis machine is used to filter the blood of a person when both kidneys are functional.

Rewrite the sentence by making necessary corrections.

7. Pick the wrong match

Renewable resource : petrol

Non renewable resource : coal

Biodiesel : jatropa seeds

8. Receptor -> sensory nerve -> interneuron -> ________________ -> effector organ

Complete the flow chart of reflex arc.

9. Rakesh had seen a snake and is afraid of it. He then took a stick and thrashed it. What is
the hormone that helps him in this situation?

10. What do this logo stands for?

11 and 12. Complete the paragraph.

______________ is the body’s method of ridding itself of unwanted or harmful substances
from the stomach. The __________________ movements of the stomach and oesophagus reverse their
normal direction and the food is expelled.

SECTION – II 8X 1= 8 MARKS

Note: Answer all the questions. Each question carries 1 marks.

13. Define synapse.

14. Write the phenotypic and genotypic ratios of monohybrid cross.

15. Write a few questions on disaster management to ask NDRF personnel.

16. Draw a rough sketch of bread mould you observed under microscope.

17.

Type of teeth Number
Molars 3
Premolars 2
Canines 1
Incisors 2
Write the dental formula for the above data.

18. Raju’s blood pressure reads 140/90. What are the values of systolic pressure and
diastolic pressure?

19.

label A and B.

20. Gaseous exchange takes place in alveoli. Appreciate the role of alveoli in gaseous
exchange.

SECTION – III 8X 2= 16 MARKS

Note: Answer all the questions. Each question carries 2 marks.

21. What do you call the substances produced in the plant body which are not required for
growth of the plant? Give two examples.

22. What is global warming? What are the causes of global warming?

23. Raju wanted to know about reproduction in amoeba. List out the questions he should
ask his teacher about reproduction in amoeba.

24. Ovary secretes oestrogen. What happens if oestrogen is not secreted?

25. Varsha prepared a stethoscope using matchstick. Write the procedure she might have
followed to prepare that stethoscope.

26. study the table:

Answer the following:

a) Which gas is utilized between inhalation and exhalation?
b) What is the percentage of carbondioxide that is released in excess to inhaled air?

27. Anand was asked to prepare slogans to participate in a rally to create awareness on
conservation of soil. Help him and write the slogans.

28. Development and conservation can coexist in harmony. Can you support the statement?
Write your reasons.

SECTION – IV 5X 4= 20 MARKS

Note: Answer all the questions. Each question carries 4 marks.

29. Compare the structure and functions of arteries and veins.

OR

What are ecological pyramids? Explain pyramid of numbers using an example.

30. What are the advantages of conservation of forests and wild life?

OR

Write any four differences between photosynthesis and respiration.

31.

a) What is the aim of the given experimental setup?

b) how do you test the gas that is released?

c) What is the alternative plant that can be used for the plant
given in the figure?

OR

What is the procedure you followed to test the action of
saliva on flour? What is the enzyme that is present in saliva?

32.

From the given flow chart, answer the following:

a) What is the sex chromosome in ovum?

b) What is the combination of sex chromosomes for
male?

c) Who decides the sex of the baby mother or father?

d)Does sex is determined by Mendel’s law of
dominance?

OR

Answer the following:

a) Name the part that has center for emotions.

b) What is the relay center for sensory and motor impulses between brain and spinal
cord?

c) Write any one function of cerebellum.

d) Which part of the brain coordinates swallowing reflex?

33.

Identify the parts. What are the structural
and functional units of kidney?

OR

Draw a neat and well labeled diagram of structure of flower. Write the names of the
male parts of the flower.