Plant Kingdom Test

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Plant Kingdom Test - 72

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Weekly Quiz Competition

Question 1
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Read the following statements regarding bryophytes and select the correct answer.
(i) Bryophytes lack true roots, stem and leaves.
(ii) The main plant body is haploid.
(iii) Sex-organs are unicellular and non-jacketed.
(iv) Fertilisation occurs in water.

A
Statements (i) and (ii) are correct.

B
Statements (ii) and (iii) are correct.

C
Statements (iii) and (iv) are correct.

D
All statements are correct.

Solution

The sex organs in bryophytes are multicellular and jacketed. The embryo develops within venter of archegonium and not in the water. The 1st two statements are correct.
So the correct option is A.
Question 2
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The moss which forms dense extensive mats on the soil prevents __________________.

A
uprooting of trees

B
soil erosion

C
falling of leaves

D
evaporation of water from the soil

Solution

Mosses form a protective covering over the crumbling soil of cliffs and prevent the rushing rainwater from cutting deeply into the soil. These grow in dense mats so firmly intertwined around the soil particles that there can be little erosion, even on a steep hillside.
So the correct option is B.
Question 3
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The heterosporous pteridophytes are ______________.

A
Lycopodium and Pteris

B
Selaginella and Psilotum

C
Selaginella and Salvinia

D
Dryopteris and Adiantum

Solution

Heterospory is the production of spores of two different sizes and of two different developmental patterns -smaller male or microspores and larger female or megaspores. Heterospory is the most important evolutionary development in vascular plants because it has ultimately led to seed development, e.g., Selaginella, Salvinia, Azolla, etc.
So the correct option is C.
Question 4
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Select the option that includes liverworts only.

A
Riccia, Marchantia

B
Riccia, Funaria

C
Polytrichum, Marchantia

D
Both (a) and (c)

Solution

Both Riccia and Marchantia belong to Class Hepaticosida/Hepaticae that includes 3 orders, the two genera belong to Order Marchantiales, that has specialized vertical stalks called the archegoniophores and serile cells called elaters in the sporangium. The plant body shows dichotomous branching.
So, the correct answer is 'Riccia, Marchantia'
Question 5
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In pteridophytes, a spore germinates to produce _______________.

A
sporophyte

B
sporogonium

C
prothallus

D
microsporophyll

Solution

In pteridophytes, spore is a haploid structure, which develops after meiosis of spore mother cell. On germination, it gives rise to a green haploid prothallus (gametophyte) which is monoecious, i.e., has both antheridia (male sex organs) and archegonia (female sex organs).
So the correct option is C.
Question 6
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In pteridophytes, prothallus produces __________________.

A
sporangia

B
antheridia and archegonia

C
vascular tissues

D
root, stem and leaf

Solution

In pteridophytes, spore is a haploid structure, which develops after meiosis of spore mother cell. On germination, it gives rise to a green haploid prothallus (gametophyte) which is monoecious, i.e., has both antheridia (male sex organs) and archegonia (female sex organs) in homosporous pteridophytes.
Example, Nephrolepis, Adiantum
So the correct option is B.
Question 7
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Which of the following is not a moss?

A
Polytrichum

B
Sphagnum

C
Funaria

D
Riccia

Solution

Riccia is a liverwort (Hepaticae), which grows predominantly in wet terrestrial habitats and are free-floating or submerged aquatic.
So the correct option is D.
Question 8
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A moss sperm moves by means of ______________.

A
pseudopodia

B
cilia

C
flagella

D
any of these

Solution

Sperm of mosses are biflagellated, ie., it has two flagella that aid in propulsion. Since sperm must swim to the archegonium, fertilisation cannot occur without water.
So the correct option is C.
Question 9
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Identify the plants shown in figure and select the correct option

A
(A) - Equisetum (B) - Fern

B
(A) - Selaginella (B) - Equisetum

C
(A) - Selaginella (B) - Salvinia

D
(A) - Equisetum (B) - Selaginella
Solution
A - Selaginella and B - Salvinia
Selaginella - Selaginella is a genus of lycophytes commonly known as spike mosses.
Salvinia - is a floating aquatic fern that thrives in slow-moving, nutrient-rich, warm, freshwater.
Question 10
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In pteridophytes, main plant body is a ____(i)___ which is ____(ii)____ into true roots, stem and leaves.
Fill the blanks in above statement and select the correct option.

A
(i) - sporophyte, (ii) - differentiated

B
(i) - sporophyte, (ii) - not differentiated

C
(i) - gametophyte, (ii) - differentiated

D
(i) - gametophyte, (ii) - not differentiated
Solution
Pteridophyta includes primitive vascular plants. The adult plant body in these plants is a sporophyte. It shows differentiation into true roots, stem, and leaves. The stem is mostly herbaceous.
The life cycle includes an alternation of generation of a diploid prophetic generation with a haploid gametophytic generation. Sporophyte generation is dominant.
So, the correct answer is " (i) - sporophyte, (ii) - differentiated " .

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Plant Kingdom Test - 72

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Plant Kingdom Test - 72

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Question 1

Statements (i) and (ii) are correct.

Statements (ii) and (iii) are correct.

Statements (iii) and (iv) are correct.

All statements are correct.

Solution

Question 2

uprooting of trees

soil erosion

falling of leaves

evaporation of water from the soil

Solution

Question 3

Lycopodium and Pteris

Selaginella and Psilotum

Selaginella and Salvinia

Dryopteris and Adiantum

Solution

Question 4

Riccia, Marchantia

Riccia, Funaria

Polytrichum, Marchantia

Both (a) and (c)

Solution

Question 5

sporophyte

sporogonium

prothallus

microsporophyll

Solution

Question 6

sporangia

antheridia and archegonia

vascular tissues

root, stem and leaf

Solution

Question 7

Polytrichum

Sphagnum

Funaria

Riccia

Solution

Question 8

pseudopodia

cilia

flagella

any of these

Solution

Question 9

(A) - Equisetum (B) - Fern

(A) - Selaginella (B) - Equisetum

(A) - Selaginella (B) - Salvinia

(A) - Equisetum (B) - Selaginella

Solution

Question 10

(i) - sporophyte, (ii) - differentiated

(i) - sporophyte, (ii) - not differentiated

(i) - gametophyte, (ii) - differentiated

(i) - gametophyte, (ii) - not differentiated

Solution

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