PLANT KINGDOM PYQS

pw neet pyqs cards

Which of the following is incorrectly matched?
a. Volvox - Starch
b. Ectocarpus - Fucoxanthin
c. Ulothrix - Mannitol
d. Porphyra - Floridean Starch

c. Ulothrix - Mannitol (Ulothrix is a green alga, so it stores starch)

Hydrocolloid carrageen is obtained from:
a. Phaeophycea only
b. Chlorophyceae and Phaeophyceae
c. Phaeophyceae and Rhodophyceae
d. Rhodophyceae only

d. Rhodophyceae only

Which of the following algae produce Carrageen?
a. Brown algae
b. Red algae
c. Blue-green algae
d. Green algae

b. Red algae

Which of the following algae contains mannitol as reserve food material?
a. Gracilaria
b. Volvox
c. Ulothrix
d. Ectocarpus

d. Ectocarpus

Which of the following pairs is of unicellular algae?
a. Gelidium and Gracilaria
b. Anabaena and Volvox
c. Chlorella and Spirulina
d. Laminaria and Sargassum

c. Chlorella and Spirulina

Floridean starch has structure similar to:
a. Amylopectin and glycogen
b. Mannitol and algin
c. Laminarin and cellulose
d. Starch and cellulose

a. Amylopectin and glycogen

Phycoerythrin is the major pigment in:
a. Blue green algae
b. Green algae
c. Brown algae
d. Red algae

d. Red algae

An example of colonial alga is:
a. Chlorella
b. Chlamydomonas
c. Ulothrix
d. Volvox

d. Volvox

Which one of the following statements is wrong?
a. Agar-agar is obtained from Gelidium and Gracilaria.
b. Laminaria and Sargassum are used as food.
c. Algae increase the level of dissolved oxygen in the immediate environment.
d. Algin is obtained from red algae, and carrageen from brown algae.

d. Algin is obtained from red algae, and carrageen from brown algae.

Male gametes are flagellated in:
a. Ectocarpus
b. Spirogyra
c. Polysiphonia
d. Anabaena

a. Ectocarpus

Isogamous condition with non-flagellated gametes is found in:
a. Fucus
b. Volvox
c. Spirogyra
d. Chlamydomonas

c. Spirogyra

Select the wrong statement:
a. Chlamydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy
b. Isogametes are similar in structure, function and behaviour
c. Anisogametes differ either in structure, function or behaviour
d. In oogamous reproduction, female gamete is smaller and motile, while male gamete is larger and non motile

d. In oogamous reproduction, female gamete is smaller and motile... (The female is actually larger and non-motile)(image-volvox{oogamous}

Gemmae are present in:
a. Pteriodophytes
b. Some Gymnosperms
c. Some Liverworts
d. Mosses

c. Some Liverworts

Which one is wrongly matched?
a. Uniflagellate gametes - Polysiphonia
b. Biflagellate zoospores - Brown algae
c. Gemma cups - Marchantia
d. Unicellular organism - Chlorella

a. Uniflagellate gametes - Polysiphonia (Rhodophyceae lack flagellated stages completely)

Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as:
a. Heterosorus
b. Homosporous
c. Heterosporous
d. Homosorus

c. Heterosporous

Strobili or cones are found in:
a. Pteris
b. Marchantia
c. Equisetum
d. Salvinia

c. Equisetum

From evolutionary point of view, retention of the female gametophyte with developing young embryo on the parent sporophyte for some time, is first observed in:
a. Liverworts
b. Mosses
c. Pteridophytes
d. Gymnosperms

c. Pteridophytes

In bryophytes and pteridophytes, transport of male gametes requires:
a. Wind
b. Insects
c. Birds
d. Water

d. Water

Which of the following statements is incorrect about gymnosperms?
a. Male and female gametophytes are free living
b. Most of them have narrow leaves with thick cuticle
c. Their seeds are not covered
d. They are heterosporous

a. Male and female gametophytes are free living (They are not independent in gymnosperms)

Pinus seed cannot germinate and established without fungal association. This is because:
a. Its embryo is immature.
b. It has obligate association with mycorrhizae.
c. It has very hard seed coat.
d. Its seeds contain inhibitors that prevent germination.

b. It has obligate association with mycorrhizae.

Which of the following statement is correct?
a. Ovules are not enclosed by ovary wall in gymnosperms
b. Selaginella is heterosporous, while Salvinia is homosporous
c. Horsetails are gymnosperms
d. Stems are usually unbranched in both Cycas and Cedrus

a. Ovules are not enclosed by ovary wall in gymnosperms

Winged pollen grains are present in:
a. Mustard
b. Cycas
c. Mango
d. Pinus

d. Pinus

Select the mismatch:
a. Pinus - Dioecious
b. Cycas - Dioecious
c. Salvinia - Heterosporous
d. Equisetum - Homosporous

a. Pinus - Dioecious (Pinus is Monoecious)

Conifers are adapted to tolerate extreme environmental conditions because of:
a. Thick cuticle
b. Presence of vessels
c. Broad hardy leaves
d. Superficial stomata

a. Thick cuticle

Select the correct statement.
a. Gymnosperms are both homosporous and heterosporous
b. Salvinia, Ginkgo and Pinus all are gymnosperms
c. Sequoia is one of the tallest trees
d. The leaves of gymnosperms are not well adapted to extremes of climate

c. Sequoia is one of the tallest trees

Which one is wrong statement?
a. Mucor has biflagellate zoospores
b. Haploid endosperm is typical feature of gymnosperms
c. Brown algae have chlorophyll a and c and fucoxanthin
d. Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms.

a. Mucor has biflagellate zoospores

Read the following statements (A-E):
A. In liverworts, mosses, and ferns gametophytes are free-living
B. Gymnosperms and some ferns are heterosporous
C. Sexual reproduction in Fucus, Volvox and Albugo is oogamous
D. The sporophyte in liverworts is more elaborate than that in mosses
E. Both Pinus and Marchantia are dioecious.
How many of the above statements are correct?
a. Four
b. One
c. Two
d. Three

d. Three (Statements A, B, and C are correct)

Besides paddy fields, Cyanobacteria are also found inside vegetative part of:
a. Psilotum
b. Pinus
c. Cycas
d. Equisetum

c. Cycas [Add diagram of Cycas plant here - NCERT Pg. 39]

Male and female gametophytes do not have an independent free living existence in:
a. Algae
b. Angiosperms
c. Bryophytes
d. Pteridophytes

b. Angiosperms

Double fertilisation is exhibited by:
a. Gymnosperms
b. Algae
c. Fungi
d. Angiosperms

d. Angiosperms

Male gametophyte with least number of cells is present in:
a. Mustard
b. Cycas
c. Funaria
d. Lilium

d. Lilium

Match the plant with the kind of life cycle it exhibits:
(A) Spirogyra -> (i) Dominant diploid sporophyte vascular plant, with highly reduced gametophyte
(B) Fern -> (ii) Dominant haploid free-living gametophyte
(C) Funaria -> (iii) Dominant diploid sporophyte alternating with reduced gametophyte called prothallus
(D) Cycas -> (iv) Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte
Options:
a. A-ii, B-iv, C-i, D-iii
b. A-iv, B-i, C-ii, D-iii
c. A-ii, B-iii, C-iv, D-i
d. A-iii, B-iv, C-i, D-ii

c. A-ii, B-iii, C-iv, D-i

What kind of life cycle does Spirogyra exhibit?

Dominant haploid free-living gametophyte

What kind of life cycle does a Fern exhibit?

Dominant diploid sporophyte alternating with reduced gametophyte called prothallus

What kind of life cycle does Funaria exhibit?

Dominant haploid leafy gametophyte alternating with partially dependent multicellular sporophyte

What kind of life cycle does Cycas exhibit?

Dominant diploid sporophyte vascular plant, with highly reduced male or female gametophyte

Zygotic meiosis is characteristic of:
a. Marchantia
b. Fucus
c. Funaria
d. Chlamydomonas

d. Chlamydomonas