NIOS Class 12 Biology Chapter 3 Kingdoms Plantae and Animalia

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NIOS Class 12 Biology Chapter 3 Kingdoms Plantae and Animalia

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Also, you can read the NIOS book online in these sections Solutions by Expert Teachers as per National Institute of Open Schooling (NIOS) Book guidelines. These solutions are part of NIOS All Subject Solutions. Here we have given NIOS Class 12 Biology Chapter 3 Kingdoms Plantae and Animalia Solutions, NIOS Senior Secondary Course Biology Solutions for All Chapter, You can practice these here.

Kingdoms Plantae and Animalia

Chapter: 3

MODULE – I: DIVERSITY AND EVOLUTION OF LIFE

NIOS TEXTBOOK QUESTIONS ANSWERS

INTEXT QUESTIONS 3.1

1. Mention one unique feature of bryophytes.

Ans. They complete their life cycle in water. and on land; hence they are called “amphibians of plant kingdom”.

2. Define alternation of generations.

Ans. There are two phases in life cycle of a plant like fern-sporophytic and gametophytic. Both alternate each other. It is called alternation of generations.

3. Name the male and female sex organs of bryophytes.

Ans. (i) Male sex organ = Antheridia.

(ii) Female sex organ = Archegonia.

4. List the habitat suitable for the growth of bryophytes. 

Ans. The cool, moist but shady places are suitable for the growth of bryophytes like Riccia etc.

INTEXT QUESTIONS 3.2

1. Name the dominant generation of Pteridophytes.

Ans. Sporophytic.

2. The stage of pteridophytes which produces spores for continuing rest of the life cycle is.

Ans. Sporophyte phase.

3. Why do you classify Pteridophytes under Tracheophyta?

Ans. As they have vascular tissues particularly the tracheids.

4. Name the male and the female reproductive organs in Pteridophytes.

Ans. The male reproductive organ is antheridia while female reproductive organs are archegonia.

5. Write the name of gametophyte of fern.

Ans. Prothallus.

INTEXT QUESTIONS 3.3

1. What does the term gymnosperm mean?

Ans. Greek: gymnos = naked.

sperma = seed, that is, naked seed plants.

2. Name any two common examples of gymnosperms.

Ans. (i) Cycas. and 

(ii) Pinus.

3. List two commercial products of gymnosperms.

Ans. (i) Resins.

(ii) Turpentine.

(ii) Timber.  [Write any two of these].

INTEXT QUESTIONS 3.4

1. Name one dicotyledonous and one monocotyledonous family.

Ans. (i) Fabaceae-dicot family.

(ii) Poaceae monocot family.

2. Give the number of stamens in:

(a) Papilionaceae __________.

Ans. Ten (9 + 1).

(b) Malvaceae __________.

Ans. Indefinite. 

3. Give botanical names of

(a) Rice __________.

Ans. Oryza sativa.

(b) Arhar __________.

Ans. Cajanus cajan.

(c) Gharita kumari __________.

Ans. Aloe vera.

4. Where do seeds develop in angiosperms?

Ans. Seeds are developed in the ovary in angiosperms.

INTEXT QUESTIONS 3.5

1. Members of which phylum possess the cnidoblasts?

Ans. Cnidaria (Coelenterata).

2. What do earthworms possess which help them in locomotion?

Ans. Setae. 

3. Are all the platyhelminthes parasites?

Ans. No. Planaria is free living.

4. How many pairs of legs do the following have (i) insects; (ii) scorpions; (iii) spiders?

Ans. (i) 3 pairs.

(ii) 4 pairs.

(iii) 3 pairs.

5. Name the organs by which the starfish move?

Ans. Tube Feet.

6. Give two examples of the Phylum Arthopoda.

Ans. (i) Prawn (Palaemon).

(ii) Millipede.

(iii) Crab, (write any two of these).

7. Name the phyla which have the following characteristics:

(i) Tube feet __________.

Ans. Tube feet-Echinodermata.

(ii) Cnidoblasts ___________.

Ans. Cnidoblasts-Cnidaria.

(iii) Chitinous exoskeleton __________.

Ans. Chitinous exoskeleton-Arthropoda.

(iv) Jointed legs ___________.

Ans. Jointed legs-Arthropoda.

(v) Nephridia ___________.

Ans. Nephridia-Annelida.

(vi) Flattened body and a gut without anus ____________.

Ans. Flattened body and a gut without anus Platyhelminthes.

INTEXT QUESTIONS 3.6

1. Name the following:

(i) The category of animals possessing backbone.

Ans. Vertebrata.

(ii) The group of backboned animals but having no jaws.

Ans. Agnatha.

(iii) Any one cartilaginous fish.

Ans. Scoliodon (dogfish).

2. State one difference between cartilaginous and bony fishes.

Ans. Difference between Cartilaginous and Bony fish:

3. Name one bony fish.

Ans. (i) Catla.

(ii) Labeo (Write any one of these).

4. List the three main characters of the phylum chordata.

Ans. Three main characters of phylum Chordata:

(i) Notochord present.

(ii) Dorsal tubular nerve cord present.

(iii) Pharyngeal gill slits present at some stage of their life.

INTEXT QUESTION 3.7

1. How many chambers are there in an amphibian heart?

Ans. Three.

2. Name a tailless amphibian.

Ans. Ichthyophis.

3. What is the literal meaning of the term “amphibia”?

Ans. They can live in water as well as upon land.

INTEXT QUESTIONS 3.8

1. Name an aquatic reptile. [Write any one of these].

Ans. (i) Turtle.

(ii) Sea Snakes.

 2. How many chambers are there in heart of a: 

(i) lizard.

Ans. Three. 

(ii) crocodile.

Ans. four.

3. What is the voice box in birds called?

Ans. Syrinx.

INTEXT QUESTIONS 3.9

1. Match the items in Column I with these in Column II.

Ans.

2. Name the Group of mammals which includes:

(i) Egg-laying mammals.

Ans. Prototheria – Egg laying mammals. 

(ii) Pouched mammals.

Ans. Metatheria — Pouched mammals. 

(iii) Flesh-eating mammals.

Ans. Carnivora — Flesh eating mammals.

(iv) Aquatic mammals.

Ans. Cetacea — Aquatic mammals.

(v) Flying mammals.

Ans. Chiroptera — Flying mammals.

3. For which characteristic feature are certain animals placed in class mammalia?

Ans. They have hairs and mammary glands. 

4. Name a mammal which has marsupium.

Ans. Kangaroo (Macropus).

5. Which group of chordates possesses hair?

Ans. Mammalia group.

TERMINAL EXERCISES

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