[3 marks Question Answer]

Question 13 Marks

Match the items in Column I with as many as possible and even repeatedly from column II.

Column I	Column II
1.Pine	(i) Fungi
2. Earthworm	(ii) Monera
3. Bread mould	(iii) Prokaryote
4.Amoeba	(iv) Gymnosperm
5. Moss	(v) Plantae
6.Bacteria	(vi) Animalia
	(vii) Protista
	(viii) Bryophyta

Answer

Column I	Column II
1.Pine	(iv) Gymnosperm (v) Plantae
2. Earthworm	(vi) Animalia
3. Bread mould	(i) Fungi
4.Amoeba	(vii) Protista
5. Moss	(v) Plantae (viii) Bryophyta
6.Bacteria	(ii) Monera (iii) Prokaryote

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Question 23 Marks

TYRANNOSAURUS

(One of the extinct animals which lived on the Earth about 100,000,000 years ago) Tyrannosaurus was about six meters long and it preyed upon other animals.

What do you think about its classification-was it an amphibian, a reptile or a mammal?

Can you call it a relative of Kangaroo?Yes/No.Give reason

Answer

No, it is not a relative of Kangaroo as Kangaroo is a mammal and Tyrannosaurus is a reptile.
Characteristics of Tyrannosaurus:

The body has scales which may be horny
Lays eggs which have a leathery shell
One of the dinosaurs which moved on the earth. These ruled the earth. Some were vegetarian, others were non-vegetarian. Archaeopteryx is a link between reptiles and birds. Its fossils have been found, which vanished from the earth due to ice-age.
Had three-chambered heart as ventricles are partially divided
Cold-blooded animals.

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Question 33 Marks

Mention any two drawbacks in classifying organisms under the old two kingdom classification.

Answer

According to the 'Two-Kingdom Classification', proposed by Carolus Linnaeus in 1758, living organisms were classified into two broad kingdoms, Plants and Animals.
The drawbacks in classifying organisms under the old two-kingdom classification are:

Bacteria were kept in Kingdom Plantae. These organisms have no chlorophyll and do not carry out photosynthesis. Bacteria do not have a definite nucleus nor a nuclear membrane nor chromosomes.
Fungi were kept in Kingdom Plantae. Bread mould is a multicellular fungi. However, it does not possess roots, stem and leaves, lacks chlorophyll and does bear any flowers, fruits and seeds like plants.

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Question 43 Marks

Write one difference between the following pair:
Invertebrates and Vertebrates

Answer

	Invertebrates		Vertebrates
1	The animals do not have a backbone.	1	The animals which have a backbone or a vertebral column.
2	They are further classified into nine groups.	2	They are further classified into five groups.
3	Example:Octopus, Starfish.	3	Example:Human Being, Lizard.

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Question 53 Marks

Match the names of animal groups in Column I with the names of animals in column II.

Column I (Group)	Column II (Animals)
Annelida	Pigeon
Porifera	Snake
Mollusca	Earthworm
Reptilia	Sponge
Amphibia	Octopus
Pisces	Trout
Mammal	Rabbit

Which names are left out that do not match and why?

Answer

Column I	Column II
Annelida	Earthworm
Porifera	Sponge
Mollusca	Octopus
Reptilia	Snake
Pisces	Trout
Mammal	Rabbit

Amphibia from Column I and Pigeon from column II are left out. They do not match as Pigeon comes under Class Aves and not Class Amphibia.

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BIOLOGY [3 marks Question Answer]

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