Plant Kingdom Test

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Plant Kingdom Test - 67

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Weekly Quiz Competition

Question 1
1 / -0

Choose the correct answers from the alternatives given.
Pteridophytcs differ from bryophytes in having:

A
motile male gametes

B
alternation of generations

C
antheridia

D
vascular tissue

Solution

Bryophytes are known as the amphibians of the plant kingdom and they do not have any true roots stem or leaves.
The pteridophytes are the first terrestrial plants that possess vascular tissues that is the xylem and phloem.
So, the correct option is 'vascular tissue'
Question 2
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Which of the following is not a trend followed during the evolutionary history of land plants?

A
Absence of seeds to presence of seeds

B
Independent gametophyte to dependent gametophyte

C
Non-flowering to flowering

D
Dominance of sporophytic generation to dominance of gametophytic generation

Solution

In lower plants such as Bryophytes, a dominant gametophyte phase is seen on which the adult sporophyte is dependent for nutrition. The embryo sporophyte develops by cell division of the zygote within the female sex organ or archegonium, and in its early development is therefore nurtured by the gametophyte. Independent gametophyte (in which the sporophyte is dependent on gametophyte for nutrition) is seen in higher plants showing alternation of generation such as angiosperms. So the trend in the evolutionary history of land plants is from dependent gametophyte to independent gametophyte.
So, the correct option is 'Independent gametophyte to dependent gametophyte'.
Question 3
1 / -0

Which of these is not a green alga?

A
Volvox

B
Fucus

C
Spirogyra

D
Chlamydomonas

Solution

The members of Chlorophyta are commonly known as green algae because of the pigment chlorophyll a and chlorophyll b. It gives them the characteristic grass green colour due to dominance.
Some commonly found green algae are volvox, ulothrix, Spirogyra, and Chlamydomonas.
Fucus belongs to the brown algae family. They possess pigments like chlorophyll C carotene and xanthophylls.
So, the correct option is 'Fucus'
Question 4
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A heterosporous plant is one that:

A
Produces a gametophyte that bears both sex organs.

B
Produces microspores and megaspores giving rise to separate male and female gametophytes.

C
Is a seedless vascular plant.

D
Produces two kinds of spores, one asexually by mitosis and one by meiosis.

Solution

Heterosporous plants are the ones that produces two different type of spores. Spores can be different in shape and size and that's the name heterosporous.
It produces two different shaped spores to differentiate between male and female gametophytes. A male gametophyte is known as microspores and a small in size and female gametes are known as megaspores and are larger in size.
So, the correct option is 'produces microspores and megaspore giving rise to separate male and female gametophyte'
Question 5
1 / -0

The megaspore of a conifer, which is never released from the sporangium, divides by mitosis to produce a:

A
Male gametophyte

B
Female gametophyte

C
Multicellular embryo

D
Pollen grain

Solution

The megaspore goes through mitotic divisions and forms a multicellular small female gametophyte. It contains two or three archegonia and one egg cell. The megaspore is never released from the megasporangium and the female gametophyte develops within the megaspore.
So, the correct option is 'female gametophyte'.
Question 6
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The small heart-shaped gametophyte called a prothallus is part of the life cycle of the

A
mosses

B
ferns

C
liverworts

D
gnetophytes

Solution

The gametophyte of ferns and other pteridophytes is known as the prothallus. It is one cell thick, usually heart or kidney shaped and does not have roots, stems or leaves, but it does have rhizoids that anchor it to the soil and help with absorption. Both female (archegonium) and male (antheridium) sex organs are present in the prothallus.
So, the correct option is 'ferns'.
Question 7
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Which of the following statements is not true about fertilization in a fern plant?

A
An egg is produced in an archegonium

B
A sperm is produced in an antheridium

C
Sperm is carried by the wind to the egg

D
Eggs and sperm are produced on the same plan

Solution

The male and female gametes are produced within the same gametophyte, sperm is produced within a structure called the antheridium and the egg is produced within a similar structure called an archegonium. When water is present, sperm uses their flagella to swim to an egg and fertilizes it. The fertilized egg remains attached to the prothallus.
So, the correct option is 'Sperm is carried by the wind to the egg'.
Question 8
1 / -0

The main function of the pyrenoid is:

A
chlorophyll production

B
synthesis of carbohydrate

C
eliminating excess water

D
to be a photoreceptor to detect light

Solution

The pyrenoid is a microcompartment within the chloroplasts of algae and hornworts. It helps promote photosynthetic CO2 fixation by the enzyme Rubisco and therefore helps in starch formation and storage.
So, the correct option is 'synthesis of carbohydrate'.
Question 9
1 / -0

Stone wort is common name of :-

A
Chara

B
Chlorella

C
Laminaria

D
Polysiphonia

Solution

Stone wort is the common name of Chara vulgaris.
So, the correct option is Chara.
Question 10
1 / -0

"Agar-agar" is obtained from :-

A
Green Algae

B
Red Algae

C
Brown Algae

D
Yellow green algae
Solution
answer:
Correct Option: B
Explanation:
Red algae such as Gelidium, Gracilaria, and Pterocladia are important in industry.
They generate a jelly-like substance called agar-agar, which is utilised as a growth medium for a variety of purposes.
Hence, Agar-Agar is obtained from Red Algae.

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Plant Kingdom Test - 67

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Plant Kingdom Test - 67

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SHARING IS CARING

Question 1

motile male gametes

alternation of generations

antheridia

vascular tissue

Solution

Question 2

Absence of seeds to presence of seeds

Independent gametophyte to dependent gametophyte

Non-flowering to flowering

Dominance of sporophytic generation to dominance of gametophytic generation

Solution

Question 3

Volvox

Fucus

Spirogyra

Chlamydomonas

Solution

Question 4

Produces a gametophyte that bears both sex organs.

Produces microspores and megaspores giving rise to separate male and female gametophytes.

Is a seedless vascular plant.

Produces two kinds of spores, one asexually by mitosis and one by meiosis.

Solution

Question 5

Male gametophyte

Female gametophyte

Multicellular embryo

Pollen grain

Solution

Question 6

mosses

ferns

liverworts

gnetophytes

Solution

Question 7

An egg is produced in an archegonium

A sperm is produced in an antheridium

Sperm is carried by the wind to the egg

Eggs and sperm are produced on the same plan

Solution

Question 8

chlorophyll production

synthesis of carbohydrate

eliminating excess water

to be a photoreceptor to detect light

Solution

Question 9

Chara

Chlorella

Laminaria

Polysiphonia

Solution

Question 10

Green Algae

Red Algae

Brown Algae

Yellow green algae

Solution

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