Every Book Back multiple-choice question from Reproduction in Plants and Animals (10th Standard Science, Samacheer Kalvi) — each with the correct option highlighted and a clear, worked explanation. Free to read in English and Tamil.
Q1
The plant which propagates with the help of its leaves is ___________ .
- A. Onion
- B. Neem
- C. Ginger
- D. BryophyllumCorrect
Explanation. Bryophyllum carries adventitious buds in the notches along its leaf margin, and each bud grows into a new plant. Onion and ginger propagate through underground stems instead.
Q2
Asexual reproduction takes place through budding in ___________ .
- A. Amoeba
- B. YeastCorrect
- C. Plasmodium
- D. Bacteria
Explanation. In yeast a small outgrowth or bud forms on the parent cell, enlarges and separates as a new individual. Amoeba and bacteria divide by fission rather than budding.
Q3
Syngamy results in the formation of _________ .
- A. Zoospores
- B. Conidia
- C. ZygoteCorrect
- D. Chlamydospores
Explanation. Syngamy is the fusion of the male and female gametes. The single diploid cell formed by that fusion is the zygote. The other three are asexual spore types.
Q4
The essential parts of a flower are ___________ .
- A. Calyx and Corolla
- B. Calyx and Androecium
- C. Corolla and Gynoecium
- D. Androecium and GynoeciumCorrect
Explanation. Androecium and gynoecium produce the gametes, so they are the essential whorls. Calyx and corolla only protect and attract, which makes them accessory whorls.
Q5
Anemophilous flowers have ___________ .
- A. Sessile stigma
- B. Small smooth stigma
- C. Colored flower
- D. Large feathery stigmaCorrect
Explanation. Anemophilous flowers are pollinated by wind, so a large feathery stigma gives a wide surface for catching drifting pollen. Colour and scent matter only to insect pollinated flowers.
Q6
Male gametes in angiosperms are formed by the division of ___________ .
- A. Generative cellCorrect
- B. Vegetative cell
- C. Microspore mother cell
- D. Microspore
Explanation. The pollen grain holds a vegetative cell and a generative cell. The generative cell divides to give the two male gametes, while the vegetative cell forms the pollen tube.
Q7
What is true of gametes?
- A. They are diploid
- B. They give rise to gonads
- C. They produce hormones
- D. They are formed from gonadsCorrect
Explanation. Gametes are produced by the gonads, the testes and the ovaries. They are haploid, not diploid, and they neither form gonads nor secrete hormones.
Q8
A single highly coiled tube where sperms are stored, get concentrated and mature is known as
- A. EpididymisCorrect
- B. Vasa efferentia
- C. Vas deferens
- D. Seminiferous tubules
Explanation. The epididymis is the long coiled tube on the testis in which sperms are stored and complete their maturation. Sperms are produced earlier, in the seminiferous tubules.
Q9
The large elongated cells that provide nutrition to developing sperms are
- A. Primary germ cells
- B. Sertoli cellsCorrect
- C. Leydig cells
- D. Spermatogonia
Explanation. Sertoli cells line the seminiferous tubules and nourish the developing sperms. Leydig cells lie outside the tubules and secrete testosterone instead.
Q10
Estrogen is secreted by
- A. Anterior pituitary
- B. Primary follicle
- C. Graffian follicleCorrect
- D. Corpus luteum
Explanation. The mature Graafian follicle in the ovary secretes estrogen. The corpus luteum, which forms after ovulation, secretes progesterone.
Q11
Which one of the following is an IUCD?
- A. Copper - TCorrect
- B. Oral pills
- C. Diaphragm
- D. Tubectomy
Explanation. An intrauterine contraceptive device is placed inside the uterus, and Copper T is that device. Oral pills are hormonal, a diaphragm is a barrier, and tubectomy is surgical.
About these Reproduction in Plants and Animals questions
These are the Book Back multiple-choice questions for Reproduction in Plants and Animals from the Tamil Nadu State Board (Samacheer Kalvi) 10th Standard Science syllabus. Each question shows the correct option and an original, step-by-step explanation so you understand the method, not just the answer. Use the answer key above to jump to any question, then take the practice test to check yourself under exam-like conditions.
Frequently asked questions
How many MCQs are there in Reproduction in Plants and Animals?
This chapter has 11 book-back multiple-choice questions, each with the correct answer and a step-by-step explanation.
Are these 10th Standard Science MCQs free to practise online?
Yes. Every question, answer and explanation here is free, and you can also take them as a timed practice test.
Where can I find the Reproduction in Plants and Animals book-back answers?
The correct option for each question is highlighted on this page with a worked explanation, plus a quick answer-key summary at the top.
