Reproduction in Organisms Test

Result

Reproduction in Organisms Test - 57

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Question 1
1 / -0

The statement 'nothing lives forever, yet life continues' illustrates the role of ______________.

A
Embryogenesis

B
Morphogenesis

C
Replication

D
Reproduction

Solution

Reproduction is the formation of new individuals of the similar kind - Life arises from pre-existing life. Reproduction is not essential for survival of the individuals. It is required for perpetuation of a population.
Question 2
1 / -0

_______ are one internode long runners, usually found is rosette plants at the ground/water level.

A
Trailers

B
Offsets

C
Stolons

D
Rhizomes

Solution

Offset: They are a lateral branch with short internodes and each node bear a rosette of leaves and a tuft of roots are found in aquatic life. It originates from the leaf axil. Present in water hyacinth, water lettuce etc.

So, the correct answer is " offset".
Question 3
1 / -0

Select the correct option:
On very special feature in the earthworm is that:

A
fertilization of eggs occurs inside the body

B
the typhlosole greatly increases the effective absorption area of intestine

C
the S-shaped setae embedded in the integument are the defensive weapons used against the enemies

D
it has a long dorsal tubular heart.

Solution

From 27th segment upt 23-25 segments in front of the anus in intestine of earthworm, lies a highly glandular and vascular part called typhosole. It greatly increases the effective absorption area for digested food in the intestine.
Question 4
1 / -0

The 'eyes' of the potato tuber represent which of the following?

A
nodes

B
root buds

C
flower buds

D
leaf buds

Solution

A tuber is swollen or oval underground modified stem lacking adventurous roots. It has a number of spirally arranged depressions called eyes. Each eye represents a node.
So, the correct answer is option A.
Question 5
1 / -0

Which of the following is not an example of corm?

A
Colocasia

B
Freesia

C
Crocus

D
Zingiber

Solution

Corms are solid stem bases. They are the vertical, fleshy, underground stem that acts as a food - storage structure in seed plants. Zingiber is a genus having tuberous rootstocks, leafy stems and a coned cluster of implicated bracts of which each bract encloses from one to three flowers. Colocasia, Freesia, Crocus are corms.

So, the correct answer is " Zingiber ".
Question 6
1 / -0

Refer to the given figures and select the correct option.

A
It is a type of parthenogenesis.

B
It is a type of asexual reproduction.

C
The offspring produced can also be called clones.

D
Both (B) and (C)
Question 7
1 / -0

Refer to the given figures which show three different types of fission. Select the option which correctly matches them with the organisms in which they occur.

A
Euglena, Plasmodium, Amoeba

B
Plasmodium, Paramecium, Euglena

C
Euglena, Paramecium, Escherichia

D
Euglena, Paramecium, Amoeba

Solution

As shown in figure 1, represents binary fission in Euglena. Euglena divides longitudinally, beginning at the front end of the cell, with the duplication of flagellar processes, gullet, and stigma. Presently, a cleavage forms in the anterior, and a V-shaped bifurcation gradually moves toward the posterior, until the two halves are entirely separated.
As shown in figure 2- In the paramecium, the macronucleus splits by a type of amitosis, and the micronuclei undergo mitosis. The cell then divides transversally, and each new cell obtains a copy of the micronucleus and the macronucleus.
As shown in figure 3 amoeba after replicating its genetic material through mitotic division, the cell divides into two equal sized daughter cells.
So, the correct answer is 'Euglena, Paramecium, Amoeba'
Question 8
1 / -0

Fusion of two motile gametes which are dissimilar in size is termed as

A
oogamy

B
isogamy

C
anisogamy

D
zoogamy

Solution

Anisogamy is a type of sexual reproduction which involves the fusion of two dissimilar gametes.
Question 9
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Match column I with column II and select the correct option from the codes given below.
Column I Column II
A. Sponge (i) Tuber
B. Yeast (ii) Offset
C. Potato (iii) Gemmules
D. Water hyacinth (iv) Budding

A
$$A-(iv), B-(i), C-(ii), D-(iii)$$

B
$$A-(iii), B-(i), C-(iv), D-(ii)$$

C
$$A-(iii), B-(iv), C-(i), D-(ii)$$

D
$$A-(iv), B-(ii), C-(i), D-(iii)$$

Solution

A. A sponge produces a tough coated dormant cluster of embryonic cells for development in more favourable conditions called Gemmules.
B. Yeast is a unicellular fungus. It reproduces asexually by the formation of spores. During the process of budding in yeast, the parent cell develops a small protuberance which grows in size.
C. Potato: Each eye of potato tuber is a bud which grows into a new potato plant when planted with a portion of the swollen tuber.
D. Offsets are one internode long runners which develop tuft of leaves at the apex. e.g., Water hyacinth.
So, the correct answer is 'A-(iii), B-(iv), C-(i), D-(ii).
Question 10
1 / -0

Cup-shaped chloroplast is present in

A
Spirogyra

B
Chlamydomonas

C
Ulothrix

D
Chara
Solution
- A single cup-shaped chloroplast is characteristic of Chlamydomonas.
- It occupies the major portion of the cell and is thick at the base while its sides are relatively thin and projected upward.
So the correct answer is option C.

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Column I	Column II
A. Sponge	(i) Tuber
B. Yeast	(ii) Offset
C. Potato	(iii) Gemmules
D. Water hyacinth	(iv) Budding

Reproduction in Organisms Test - 57

Result

Reproduction in Organisms Test - 57

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SHARING IS CARING

Question 1

Embryogenesis

Morphogenesis

Replication

Reproduction

Solution

Question 2

Trailers

Offsets

Stolons

Rhizomes

Solution

Question 3

fertilization of eggs occurs inside the body

the typhlosole greatly increases the effective absorption area of intestine

the S-shaped setae embedded in the integument are the defensive weapons used against the enemies

it has a long dorsal tubular heart.

Solution

Question 4

nodes

root buds

flower buds

leaf buds

Solution

Question 5

Colocasia

Freesia

Crocus

Zingiber

Solution

Question 6

It is a type of parthenogenesis.

It is a type of asexual reproduction.

The offspring produced can also be called clones.

Both (B) and (C)

Question 7

Euglena, Plasmodium, Amoeba

Plasmodium, Paramecium, Euglena

Euglena, Paramecium, Escherichia

Euglena, Paramecium, Amoeba

Solution

Question 8

oogamy

isogamy

anisogamy

zoogamy

Solution

Question 9

$$A-(iv), B-(i), C-(ii), D-(iii)$$

$$A-(iii), B-(i), C-(iv), D-(ii)$$

$$A-(iii), B-(iv), C-(i), D-(ii)$$

$$A-(iv), B-(ii), C-(i), D-(iii)$$

Solution

Question 10

Spirogyra

Chlamydomonas

Ulothrix

Chara

Solution

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