09 Apr 2022

Samacheer Kalvi 10th Science Unit 17 Answers

10th Science Book Back Answers Unit 17 – Reproduction In Plants And Animals:

Samacheer Kalvi 10th Standard Science Book Back Questions with Answers PDF uploaded and the same is given below. Class-tenth candidates and those preparing for TNPSC exams can check the New Science Book Back Question and Answers PDF below.  Samacheer Kalvi Class 10th Std Science Book Back Answers Biology Unit 17 – Reproduction in Plants and Animals Solutions are available below. Complete solutions for all 23 Units’ book back questions with a solutions guide uploaded and available on our site. Check the complete Samacheer Kalvi 10th Science Unit 17 Answers below:

We also provide class 10th other units Science Book Back One and Two Mark Solutions Guide on our site. Students looking for a new syllabus 10th standard Science Biology Unit 17 – Reproduction in Plants and Animals Book Back Questions with Answer PDF

For the complete Samacheer Kalvi 10th Science Book Back Solutions Guide PDF, check the link – Samacheer Kalvi 10th Science Book Back Answers




Samacheer Kalvi 10th Science Book Back Answers Biology Unit 17 – Reproduction In Plants And Animals:

Samacheer Kalvi 10th Science Book Subject One Mark, Two Mark Guide questions and answers are below. Check Science Book Back Questions with Answers. Take the printout and use it for exam purposes.

For Samacheer Kalvi 10th Science Book PDF, check the link – 10th Science Book PDF

10th Science – Biology

Unit 17: Reproduction In Plants And Animals

I. Choose the best answer:

1. The plant which propagates with the help of its leaves is.
a) Onion   b) Neem   c) Ginger   d) Bryophyllum
Ans: (d) Bryophyllum

2. Asexual reproduction takes place through budding in.
a) Amoeba   b) Yeast   c) Plasmodium    d) Bacteria
Ans: (b) Yeast

3. Syngamy results in the formation of.
a) Zoospores    b) Conidia   c) Zygote   d) Chlamydospores
Ans: (c) Zygote

4. The essential parts of a flower are.
a) Calyx and Corolla              b) Calyx and Androecium
c) Corolla and Gynoecium   d) Androecium and Gynoecium
Ans: (d) Androecium and Gynoecium

5. Anemophilous flowers have.
a) Sessile stigma   b) Small smooth stigma   c) Colored flower   d) Large feathery stigma
Ans: (d) Large feathery stigma

6. Male gametes in angiosperms are formed by the division of.
a) Generative cell   b) Vegetative cell   c) Microspore mother cell   d) Microspore
Ans: (a) Generative cell

7. What is true of gametes?
a) They are diploid                 b) They give rise to gonads
c) They produce hormones  d) They are formed from gonads
Ans: (d) They are formed from gonads

8. A single highly coiled tube where sperms are stored, get concentrated and mature is known as
a) Epididymis   b) Vasa efferentia   c) Vas deferens   d) Seminiferous tubules
Ans: (a) Epididymis

9. The large elongated cells that provide nutrition to developing sperms are
a) Primary germ cells   b) Sertoli cells    c) Leydig cells   d) Spermatogonia
Ans: (b) Sertoli cells

10. Estrogen is secreted by
a) Anterior pituitary    b) Primary follicle   c) Graffian follicle   d) Corpus luteum
Ans: (c) Graffian follicle

11. Which one of the following is an IUCD?
a) Copper – T b) Oral pills c) Diaphragm d) Tubectomy
Ans: (a) Copper – T

II. Fill in the blanks

1. The embryo sac in a typical dicot at the time of fertilization is _______. Ans: 7 Celled
2. After fertilization the ovary develops _____.  Ans: Fruit
3. Planaria reproduces asexually _____.   Ans: Regeneration
4. Fertilization is in humans. Ans: Internal
5. The implantation of the embryo occurs at about ______days of fertilization.  Ans: 6 – 7 days
6. _______is the first secretion from the mammary gland after childbirth.   Ans: Colostrum
7. Prolactin is a hormone produced by ________.   Ans: Pituitary gland




III. Match the following:

Question 1.

Column I Column II
1. Fission (a) Spirogyra
2. Budding (b) Amoeba
3. Fragmentation (c) Yeast

Answer:
1. (b) Amoeba
2. (c) Yeast
3. (a) Spirogyra.

Question 2.
Match the following terms with their respective meanings.

1. Parturition (a) The duration between pregnancy and birth
2. Gestation (b) Attachment of zygote to the endometrium
3. Ovulation (c) Delivery of baby from a uterus
4. Implantation (d) Release of an egg from Graafian follicle

Answer:
1. (c) Delivery of baby from a uterus
2. (a) Duration between pregnancy and birth
3. (d) Release of the egg from the Graafian follicle
4. (b) Attachment of zygote to the endometrium.

III. True or False (Correct the Statement if it is false)

1. Stalk of the ovule is called a pedicle.
Ans: False. The stalk of the ovule is called the funiculus.

2. Seeds are the product of asexual reproduction.
Ans: False. Seeds are the product of sexual reproduction.

3. Yeast reproduces asexually by means of multiple fission.
Ans: False. Yeast reproduces asexually by means of budding.

4. The part of the pistil which serves as a receptive structure for the pollen is called a style.
Ans: False. The part of the pistil which serves as a receptive structure for the pollen is called a stigma.

5. Insect-pollinated flowers are characterized by dry and smooth pollen.
Ans: False. Wind-pollinated flowers are characterized by dry and smooth pollen.

6. Sex organs produce gametes which are diploid.
Ans: False. Sex organs produce gametes that are haploid.

7. LH is secreted by the posterior pituitary.
Ans: False. LH is secreted by the anterior pituitary.

8. Menstrual cycle ceases during pregnancy. Ans: True.

9. Surgical methods of contraception prevent gamete formation.
Ans: False. Surgical methods of contraception prevent gametes transportation.

10. The increased level of estrogen and progesterone is responsible for menstruation.
Ans: False. The decreased level of estrogen and progesterone is responsible for menstruation.

Other Important links for 10th Science Book Answers Solutions:

For the 10th Standard Science Unit 18 book back question and answers solutions PDF, check the link – Samacheer kalvi 10th Science Unit 18 – Heredity

Click here for the complete Samacheer Kalvi 10th Science Book Back Solution Guide PDF – 10th Science Book Back Solutions




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