SCF-CBSE-X-HOW DO ORGANISMS REPRODUCE-BMT-01

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Time: 1Hr SCF-CBSE-X-BIOLOGY HOW DO ORGANISMS REPRODUCE

Maximum Marks: 26

INSTRUCTIONS: 1. All the questions are compulsory. 2. The question paper consists of 16 questions and are divided into 4 sections, A, B ,C and D. 3. Question numbers 1 to 6 are in section A and are multiple choice questions. Where you need to select one correct option out of the given four. 4. Question numbers 7 to 10 are in section B and are Very Short Answer Type Questions. 5. Question numbers 11 to 14 are in section C and are Short Answer Type Questions. 6. Question numbers 15 & 16 are in section D and are Long Answer Type Questions. 7. Use of calculators are not permitted.

SECTION-A 1. Gonorrhoea is caused by a bacterium called 1) Neisseria gonorrhoea 2) Treponema palladium

3) Lactobacillus 4) Streptococcus

2. In human females, an event that reflects onset of reproductive phase is 1) Growth of body 2) Changing in hair pattern

3) Change in voice 4) Menstruation

3. Which among the following is not the function of testes an puberty? (i) Formation of germ cells (ii) Secretion of testosterone

(iii) development of placenta (iv) Secretion of estrogen 1) (i) and (ii) 2) (ii) and (iii) 3) (iii) and (iv) 4) (i) and (iv)

4. The individual units of corolla are called 1) Petals 2) Sepals 3) Stamens 4) Pistils

5. A pair of duct arising from testis, which carry sperms are 1) Fallopian tube 2) Vas deferens 3) Oviduct 4) Urethra

6. Which among the following statements are true for sexual reproduction in flowering plants? (i) It requires two types of gametes

(ii) Fertilisation is a compulsory event

(iii) It always results in formation of zygote

(iv) Offspring formed are clones

1) (i) and (iv) 2) (i) (iii) and (iv) 3) (i), (ii) and(iii) 4) (i), (ii) and (iv)

SCF-CBSE-X-HOW DO ORGANISMS REPRODUCE-BMT-01

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SECTION-B

VERY SHORT ANSWER QUESTIONS (1mark)

7. Why is sexual reproduction considered to be superior to asexual reproduction in terms of evolution?

8. Name the largest cell present in the human body.

9. What is capacitation?

10. What harm is caused if the testis in human males fail to descend in to the scrotal sacs?

SECTION-C

SHORT ANSWER QUESTIONS (2marks)

11. How will an organism be benefitted if it reproduces through spores?

12. How is the process of pollination different from fertilization?

13. What are the aspects included & required to study under reproductive health.

14. What could be the reasons for adopting contraceptive methods? Explain.

SECTION-D

LONG ANSWER QUESTIONS (4marks)

15. Briefly explain the events of menstrual cycle.

16. A sexually reproducing organism can never produce an offspring with its own exact set of genetic material. Justify the statement.

*****END OF TEST PAPER****