Samacheer Kalvi solutions for Biology (Zoology) [English] Class 12 TN Board chapter 2 - Human Reproduction [Latest edition]

The mature sperms are stored in the ____________.

The male sex hormone testosterone is secreted from ____________.

The glandular accessory organ which produces the largest proportion of semen is ____________.

The male homologue of the female clitoris is ____________.

The site of embryo implantation is the ____________.

The foetal membrane that forms the basis of the umbilical cord is ____________.

The most important hormone in initiating and maintaining lactation after birth is ____________.

Mammalian egg is ____________.

The process which the sperm undergoes before penetrating the ovum is ____________.

Painful menstruation is termed as ____________.

The milk secreted by the mammary glands soon after childbirth is called ____________.

Colostrum is rich in ____________.

The Androgen Binding Protein (ABP) is produced by ____________.

Which one of the following menstrual irregularities is correctly matched?

Find the wrongly matched pair.

Answer the following type of question Assertion (A) and Reason (R).

(A) - In human males, testes are extra-abdominal and lie in scrotal sacs.

(R) - Scrotum acts as a thermoregulator and keeps the temperature lower by 2°C for normal sperm production.

Answer the following type of question Assertion (A) and Reason (R).

(A) - Ovulation is the release of the ovum from the Graafian follicle.

(R) - It occurs during the follicular phase of the menstrual cycle.

Answer the following type of question Assertion (A) and Reason (R).

(A) - Head of the sperm consists of acrosome and mitochondria.

(R) - Acrosome contains spiral rows of mitochondria.

Mention the differences between spermiogenesis and spermatogenesis.

At what stage of development are the gametes formed in newborn male and female?

Expand the acronym.

FSH

How is polyspermy avoided in humans?

What is colostrum? Write its significance.

Placenta is an endocrine tissue. Justify.

Draw a labeled sketch of a spermatozoan.

What is inhibin? State its functions.

Mention the importance of the position of the testes in humans.

What is the composition of semen?

Name the hormones produced from the placenta during pregnancy.

Define gametogenesis.

Describe the structure of the human ovum with a neat labelled diagram.

Give a schematic representation of spermatogenesis and oogenesis in humans.

Explain the various phases of the menstrual cycle.

List the various menstrual disorders.

Explain the role of oxytocin and relaxin in parturition and lactation.

Identify the given image and label its parts marked as a, b, c and d

The following is the illustration of the sequence of ovarian events (a − i) in a human female

(i) Identify the figure that illustrates ovulation and mention the stage of oogenesis it represents.

(ii) Name the ovarian hormone and the pituitary hormone that have caused the above mentioned event.

(iii) Explain the changes that occur in the uterus simultaneously in anticipation.

(iv) Write the difference between ‘c’ and ‘h’.

(v) Draw a labeled sketch of the structure of a human ovum prior to fertilization.