What is the structure called which has a function of producing male gametes in mass?
What is the structure called which has function of increasing force in uterine contraction?

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Solution

The seminiferous tubules present in the testicular lobules of the testes are the sites of sperm formation.
The middle layer of the uterine wall called myometrium induces force in uterine contractions.

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Complete the following table by writing the name of the structure or the function of the given structure :

Structure Function

1. Corpus luteum 1. .................

2. ................... 2. Produces male gametes in mass.

3. Placental disc 3. ....................

4. ....................... 4. Increases the force in uterine contraction

5. Umbilical cord. 5. ................

6. Fallopian tube 6. ................

(a) What are the male gametes in humans called ?

(b) Name the organs which produce male gametes

Look at the diagram of an axon. It has this covering structure on them called myelin sheath. What is its function ?

(a) Humans reproduce ....... (asexually / sexually)

(b) Humans are ......... (oviparous /vivaparous/ovoviviparous)

(d) Male and female gametes are ...... (diploid / haploid)

(e) Zygote is ..... (diploid/ haploid )

(f) The process of release of ovum from a mature follicle is called...........

(g) Ovulation is induced by a hormone called ......

(h) The fusion of male and female gametes is called ......

(i) Fertilisation takes place in .....

(j) Zygote divides to form........ which is implated in uterus.

(k) The structure which provides vascular connection between foetus and uterus is called.

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