Test: Reproduction in Animals- 2 - UPSC MCQ

• Budding is a type of asexual reproduction where new individuals develop as outgrowths or buds from a single parent.
• This is observed in organisms like hydra and yeast.

At puberty, the testes undergo significant changes in function. The correct answer, C: (iii) and (iv), states that the development of placenta and secretion of estrogen are not functions of the testes at puberty.
Here's a breakdown:
- The testes are responsible for the formation of germ cells (sperm production).
- They secrete testosterone, a crucial male sex hormone.
- However, the development of placenta and secretion of estrogen are functions typically associated with female reproductive anatomy, not the testes.
Therefore, option C is the correct choice.

• The male reproductive organs include testes, sperm ducts, and penis.
• The testes produce male gametes (sperms), the sperm ducts transport the sperms, and the penis is involved in delivering the sperms to the female reproductive system.

The correct sequence of organs in the male reproductive system for the transport of sperm is:  Testis ➔ vas deferens ➔ urethra
Explanation:
- Sperm is produced in the testes.
- From the testes, sperm travels through the vas deferens.
- The vas deferens transports sperm to the urethra.
- The urethra serves as the final pathway for sperm to exit the body during ejaculation.
Therefore, option A: Testis ➔ vas deferens ➔ urethra is the correct sequence for the transport of sperm in the male reproductive system.

Metamorphosis is the transformation of a larva into an adult through drastic changes.

The correct answer is A: 2:1.
- A human zygote has 46 chromosomes, which is the result of the fusion of a human egg (23 chromosomes) and a human sperm (23 chromosomes).
- The ratio of chromosomes in a human zygote to a human sperm is therefore 2:1, as the zygote contains twice the number of chromosomes compared to a single sperm.
- This ratio reflects the combination of genetic material from both parents during fertilization.