Set -2
Life Science , Practice Questions Paper, Class 10, English Medium West Bengal Board
Total Mark: 40 Time: 1 Hour 15 Minutes
Group A
1. Write the answer in complete sentences by choosing the correct answer for each question with a respective serial number:
Mark:1 for each question
1. The photosensitive layer of our eyeball is -
a) Retina
b) Sclera
c) Choroid
d) Cornea
2. Hormone that controls the Tropic movement in the plant body is -
a) Vernaline
b) Gibberellin
c) Auxin
d) Cytokinin
3. The hormone testosterone is secreted from -
a) Testis
b) Ovary
c) Adrenal gland
d) Thyroid gland
4) In which stage of mitotic cell division the nuclear membrane and nucleolus are seen to reappear -
a) Anaphase
b) Prophase
c) Metaphase
d) Telophase
5. In which of the following stage of the cell cycle does DNA duplicate -
a) M stage
b) G1 stage
c) S stage
d) G2 stage
6. Which of the following hormone control the process of ovum production -
a) FSH
b) LH
c) Estrogen
d) Progesterone
7. Petal movement of sunflower is called
a) Photonasity
b) Chemonasty
c) Phototropic
d) Nictinasty
Group B
Decide whether the following statements are true or false
Mark:1 for each question
8. The example of the Ball and socket joint is the elbow joint.
9. If the checkpoint of the cell cycle is damaged then there is a possibility of cancer.
10. Chromosomes are found in the cytoplasm of the Cell.
Match the word in column A with those which are most appropriate in column B and rewrite the correct pair mentioning the serial number of both columns.
Mark 1 for each question
Column A. Column B
11. Auxin A) Rotation
12. Neucleotide. B) Junction of the retina and optic nerve
13. Blind Spot. C) Seedless fruits
14. Diabetes mellitus. D) Neucleoside plus Phosphoric Acid
15. Pyriformis Muscles E) Affect on eye, Kidney, and Heart.
Answer in a single word or in a single sentence.
Mark: 1 for each question
16. Name the hormone secreted from the corpus leutam of a human female.
17. Find the odd one and write the reason: Ganglia, Cerebrum, Cerebellum, Pons
18. Name the pyrimidine present in both RNA and DNA.
19. State the complete name of a weedicide hormone.
Group C
Answer questions in 2-3 sentences of questions below.
Mark: 2 for Each question.
20. Insulin and glucagon work in the opposite direction to control blood glucose levels. Explain.
21. Distinguish cytokinesis of plant and animal cell division.
22. State the two roles of skeletal muscles with examples in human locomotion
Group D
Mark: 5 for each question
23. Draw the morphology of an ideal eukaryotic chromosome and label the following parts. a) Chromatid b) Centromere c) Nucleolar organizer d) Telomere. (3+2)
24. What is reflex action? Draw a diagram of the reflex arc and label it. (1+4)
25. Mention the significance of Meiosis cell division? state difference between Mitosis and meiosis cell division (3+2)
