Diversity in Living Organisms Test

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Diversity in Living Organisms Test - 66

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Question 1
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Auxetic growth is characterised by

A
Increase in cell number

B
Growth without increase in cell number

C
Both increase in cell number and cell growth

D
Expansion in transverse direction

Solution

Increase in size of the cells is called Auxetic growth. It occurs in both plants and animals. In plants, auxetic growth is concerned in increasing in cell size. In animals, it occurs in certain tissues, such as muscles, of the higher animals as well as in some organisms like nematodes, tunicates, and rotifers.
So, the correct option is ‘Growth without increase in cell number’.
Question 2
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Auxetic growth occurs in

A
Human beings

B
Frog

C
Nematodes

D
Lizards

Solution

Increase in size of the cells is called Auxetic growth. It occurs in both plants and animals. In plants, auxetic growth is concerned in increasing in cell size. In animals, it occurs in certain tissues, such as muscles, of the higher animals as well as in some organisms like nematodes, tunicates, and rotifers.
So, the correct option is ‘Nematodes’.
Question 3
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Snakes belongs to reptiles because

A
It can crawl

B
It is oviparous

C
It has feather

D
None of the above

Solution

The class name Reptile refers to their creeping or crawling mode of locomotion (Latin, repere or reptum, to creep or crawl). Snakes are included in reptiles because of their other similarities like hard scales on skin and are poikilotherms.
So, the correct option is 'It can crawl'.
Question 4
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When growth taken place only by increase in volume of existing cells, it is called

A
Auxetic growth

B
Multiplicative growth

C
Accretionary growth

D
Differential growth

Solution

A. Auxetic growth – Growth takes place only by an increase in the volume of cells.

B. Multiplicative growth – Growth takes place only by an increase in the number of cells.

C. Accretionary growth - It involves a cell secretion to increase the volume of the extracellular spaces. Many adult tissues will only divide when induced by injury or other stimuli. It occurs in cartilage and bone.

D. Differential growth – Growth involves the formation of different types of cells.
So, the correct option is ‘Auxetic growth’.
Question 5
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Ovules are not found enclosed within the ovary in:

A
Gymnosperms

B
Spermatophytes

C
Dicotyledons

D
Monocotyledons

Solution

Gymnosperms are flowerless plants that produce cones and seeds.
The term gymnosperm literally means "naked seed," as gymnosperm seeds are not encased within an ovary. Rather, they sit exposed on the surface of leaf-like structures called bracts. For example, in conifers, cycads, and ginkgo.
Hence, the correct answer is 'Gymnosperms'.
Question 6
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Choose the correct answer from the alternatives given.
Which one of the following ways of acquiring nutrients is not characteristic of fungi?

A
Saprophytic

B
Parasitic

C
Autotrophic

D
Heterotrophic

Solution

Fungi are heterotrophic. They can be saprophytic because they feed on organic remains by secreting enzymes and then absorbing the digested food. And there are pathogenic fungi as well and most of them are parasites of a plant.
Hence, the correct answer is option C- 'Autotrophic'.
Question 7
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Which of the following is mismatched?

A
Sponges- spicules

B
Tapeworms- proglottids

C
Cnidaria- nematocysts

D
Roundworms- cilia
Solution
Spicules are structural elements that provide support and are found in animals.
Tapeworms have rectangular body segments that are known as proglottids.
Cnidarians have tentacles with stinging cells known as nematocysts that help them capture their prey.
Roundworms lack features such as cilia.
So, the correct option is 'Roundworm- cilia.'
Question 8
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Of the following, the most recent ancestors of vascular plants were probably

A
Mosses

B
Red algae

C
Pteridophyte

D
Green algae

Solution

The pteridophytes include horsetails and ferns. These are the first terrestrial plants that possessed the vascular tissue that is the xylem and phloem. These are considered as the ancestors of most of the vascular plants like angiosperms and gymnosperms.
So, the correct option is C.
Question 9
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Choose the correct answers from the alternatives given.
Which one of the following characteristics can be used to distinguish gymnosperms from angiosperms?

A
Presence of vascular bundles in gymnosperms

B
Presence of naked ovules in gymnosperms

C
Presence of stomata in angiosperms

D
Absence of naked ovules in gymnosperms

Solution

Gymnosperms are the plants in which the ovules are not covered by an ovary. Hence thee seeds are naked. The seeds of Angiosperms are enclosed by the fruit.
So, the correct option is 'Presence of naked ovules in gymnosperms'
Question 10
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An insect differs from a spider in which one of the following ways:

A
Insects have three pairs of legs and two pairs of wings while spiders have four pairs of legs and no wings.

B
Insects have four pairs of legs and a pair of wings while spiders have four pairs of legs and no wings.

C
Insects have three pairs of legs and three pairs of wings while spiders have three pairs of legs and no wings.

D
Insects have four pairs of legs and two pairs of wings while spiders have three pairs of legs and no wings.

Solution

Insects have three pairs of legs (six legs) while spiders have four pairs of legs (eight legs). Insects have two pairs of wings that are found in the second and third thoracic segments, but spiders do not have wings.
So, the correct option is 'insects have three pairs of legs and two pairs of wings while spiders have four pairs of legs and no wings.'

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Re-Attempt Weekly Quiz Competition

Diversity in Living Organisms Test - 66

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Diversity in Living Organisms Test - 66

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SHARING IS CARING

Question 1

Increase in cell number

Growth without increase in cell number

Both increase in cell number and cell growth

Expansion in transverse direction

Solution

Question 2

Human beings

Frog

Nematodes

Lizards

Solution

Question 3

It can crawl

It is oviparous

It has feather

None of the above

Solution

Question 4

Auxetic growth

Multiplicative growth

Accretionary growth

Differential growth

Solution

Question 5

Gymnosperms

Spermatophytes

Dicotyledons

Monocotyledons

Solution

Question 6

Saprophytic

Parasitic

Autotrophic

Heterotrophic

Solution

Question 7

Sponges- spicules

Tapeworms- proglottids

Cnidaria- nematocysts

Roundworms- cilia

Solution

Question 8

Mosses

Red algae

Pteridophyte

Green algae

Solution

Question 9

Presence of vascular bundles in gymnosperms

Presence of naked ovules in gymnosperms

Presence of stomata in angiosperms

Absence of naked ovules in gymnosperms

Solution

Question 10

Insects have three pairs of legs and two pairs of wings while spiders have four pairs of legs and no wings.

Insects have four pairs of legs and a pair of wings while spiders have four pairs of legs and no wings.

Insects have three pairs of legs and three pairs of wings while spiders have three pairs of legs and no wings.

Insects have four pairs of legs and two pairs of wings while spiders have three pairs of legs and no wings.

Solution

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