Plant Kingdom Test

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Plant Kingdom Test - 60

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Question 1
1 / -0

Green algae associated with oxidation tanks are

A
Spirogyra and Zygnema

B
Pediastrum and Scenedesmus

C
Chlorella and Chlamydomonas

D
Both B and C

Solution

Green algae associated with oxidation tanks are Spirogyra and Zygnema. Spirogyra are commonly found in freshwater habitats, developing slimy filamentous green masses. In oxidation tanks, there is enough sunlight and warmth they produce large amounts of oxygen, adhering as bubbles between tangled filaments. Similarly, Zygnema is a genus of freshwater filamentous thalloid algae. Zygnema grows as a free-floating mass of filaments, although young plants maybe found anchored to streambeds with a holdfast.
So, option A is the correct option.
Question 2
1 / -0

Pigment present in hypnospores/zygospores of Chlamydomonas is ________.

A
Haematochrome

B
$$a$$-Carotene

C
Fucoxanthin

D
Anthocyanin

Solution

Pigment present in hypnospores of Chlamydomonas is haematochrome. It is yellow, orange, or red biological pigment present in green algae, especially when exposed to intense sunlight. The Chlamydomonas has sensory spots which are red in color due to the presence of of haematochrome. This red color carotenoids reflect light and photoreceptors.
So, option A is the correct option.
Question 3
1 / -0

In hepaticae/liverworts of bryophytes, the majority is

A
Flattened thalloids

B
Foliose

C
Discoid

D
Rosette
Question 4
1 / -0

Which one of the following statements is wrong.

A
Laminaria and Sargassum are used as food

B
Algae increase the level of dissolved oxygen in the immediate environment

C
Algin is obtained from red algae and carrageenan from brown algae

D
Agar-agar is obtained from Gelidium and Gracilaria

Solution

Algin is obtained from brown algae and carrageenan is obtained from red algae. Carrageenan is present in red seaweeds. It is used to thicken a variety of foods, ice cream, salad dressings, chocolate milk, and jellies. Algin is present in brown seaweeds.
So, option C is the correct option.
Question 5
1 / -0

Sea foam which is drifted to the sea shores is formed by

A
External shell of Cuttle Fish

B
Algal bloom

C
Bones of Octopus

D
Calcareous matter excreted by cephalopods

Solution

Sea foam is also called as ocean foam, beach foam. It is a foam that is formed by the agitation of seawater and is drifted to the sea shores. It contains higher concentrations of dissolved organic matter that is obtained from algal blooms.
Thus, the correct answer is option B.
Question 6
1 / -0

Chlorophyll a, chlorophyll d and phycoerythrin pigments are found in

A
Cyanophyceae

B
Bacillariophyceae

C
Rhodophyceae

D
Chlorophyceae

Solution

Rohodophyceae are red algae. It belongs to division Rhodophyta. The photosynthetic pigments present in it includes chlorophyll d, phycobilins, phycoerythrin, phycocyanin, xanthophyll, chlorophyll a and carotene. Phycoerythrin is a red pigment that is accessory to the main chlorophyll pigments responsible for photosynthesis.
Thus, the correct answer is option C.
Question 7
1 / -0

Laminaria and Fucus belong to

A
Red algae

B
Green algae

C
Brown algae

D
Golden brown algae

Solution

Laminaria and Fucus are genus of brown algae. The brown color of these algae is due to xanthophyll pigment called fucoxanthin. Laminaria is also called as kelp. It is the largest and most complex brown algae.
Thus, the correct answer is option C.
Question 8
1 / -0

The alga which can be employed as food for human beings is _________.

A
Chlorella

B
Spirogyra

C
Polysiphonia

D
Ulothrix

Solution

Chlorella is a single celled chlorophycean alga with rich protein content. It is considered as a source of SCP (single cell protein) and also as a food source during long space travels. It is spherical in shape, about 2 to 10m in diameter.
So, option A is the correct option.
Question 9
1 / -0

Spore dissemination in some liverworts is aided by

A
Peristome

B
Elaters

C
Calyptra

D
Indusium

Solution

Spore dissemination in some liverworts is aided by elaters. Elater is a water attracting cell structure found in the capsule of liverworts. It is hygroscopic in nature. Due to its hygroscopic nature, it helps in dispersal of spores.
Thus, the correct answer is option B.
Question 10
1 / -0

The number of chromosomes in an angiospermic plant is $$14$$. The number of chromosomes in synergid cells will be ______.

A
$$28$$

B
$$21$$

C
$$14$$

D
$$7$$

Solution

The pollen tube ultimately enters an ovule through the micropyle and penetrates one of the sterile cells on either side of the egg ( synergids). These synergids begin to degenerate immediately after pollination.
Synergids are haploid in nature. Thus, if the angiosperms plant cell has 2n = 14, synergids will have n = 7.

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Re-Attempt Weekly Quiz Competition

Plant Kingdom Test - 60

Result

Plant Kingdom Test - 60

Score

-

Rank

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SHARING IS CARING

Question 1

Spirogyra and Zygnema

Pediastrum and Scenedesmus

Chlorella and Chlamydomonas

Both B and C

Solution

Question 2

Haematochrome

$$a$$-Carotene

Fucoxanthin

Anthocyanin

Solution

Question 3

Flattened thalloids

Foliose

Discoid

Rosette

Question 4

Laminaria and Sargassum are used as food

Algae increase the level of dissolved oxygen in the immediate environment

Algin is obtained from red algae and carrageenan from brown algae

Agar-agar is obtained from Gelidium and Gracilaria

Solution

Question 5

External shell of Cuttle Fish

Algal bloom

Bones of Octopus

Calcareous matter excreted by cephalopods

Solution

Question 6

Cyanophyceae

Bacillariophyceae

Rhodophyceae

Chlorophyceae

Solution

Question 7

Red algae

Green algae

Brown algae

Golden brown algae

Solution

Question 8

Chlorella

Spirogyra

Polysiphonia

Ulothrix

Solution

Question 9

Peristome

Elaters

Calyptra

Indusium

Solution

Question 10

$$28$$

$$21$$

$$14$$

$$7$$

Solution

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