Gymnosperm

Q.

What are the difference between angiosperms and gymnosperms?

Q.

The seed habit in pteridophytes is considered an important step in evolution which is due to

1. Heterospory

2. Homospory

3. Homogamy

4. Heterogamy

Q.

Which gymnosperm shows the presence of vessels?

Q.

Which of the following is an example of floating plants?

1. Water hyacinth

2. Lotus

3. Hydrilla

4. Vallisneria

Q. Gymnosperms include

1. All of the above
2. Tall trees
3. Medium-sized trees
4. Shrubs

Q.

What is transfusion tissue?

Q. Mycorrhiza is found in roots of

1. Ephedra
2. Cycas
3. Gnetum
4. Pinus

Q. The tallest tree in the world belongs to _________ genus and division of _________.

1. Sequoia, angiosperms
2. Eucalyptus, gymnosperms
3. Sequoia, gymnosperms
4. Eucalyptus, angiosperms

Q. Select the mismatch:

1. Cycas - Dioecious
2. Salvinia - Heterosporous
3. Equisetum - Homosporous
4. Pinus - Dioecious

Q. Conifers are adapted to tolerate extreme environmental conditions because of

1. superficial stomata
2. thick cuticle
3. presence of vessels
4. broad hardy leaves

Q. Which among the following is a monocot plant that has no residual endosperm in the mature seeds?

1. Castor
2. Maize
3. Orchids
4. Both b and c

Q.

Which generation is dominant in gymnosperms?

Q.

How are plants showing symbiotic association benefitted?

Q.

Which group of gymnosperms is the largest?

Q.

Which of the following is a dicot plant?

1. Maize

2. Rice

3. Pea

4. Wheat

Q. Cycas has _____________ in its coralloid roots.

1. brown algae
2. fungi
3. blue green algae
4. green algae

Q.

Mycorrhizae are Found in the Roots of

1. Pinus

2. Coralloid roots in cycas

3. Algae

4. All the above

Q. Which among the following shows a symbiotic association in its roots ?

1. Cycas
2. Pinus
3. All of the above
4. Pisum sativum

Q.

Are ferns gymnosperms?

Q.

The microsporophyll of Cycas represents a:

1. Male gamete

2. Stamen

3. Pollen grain

4. pollinium

Q.

The water conducting tissue generally present in gymnosperm is :

1. Vessels

2. Sieve tubes

3. Tracheids

4. Xylem fibres

Q.

What is the similarity between gymnosperms and angiosperms?

Q.

The boy was cured _____ typhoid

Q.

Plants of this group are diploid and well adapted to extreme conditions. They grow bearing sporophylls in compact structures called cones. The group in reference is

(a) monocots (b) dicots (c) pteridophytes (d) gymnosperms

Q.

The giant redwood tree (Sequoia sempervirens) is a/an

(a) angiosperm (b) free fern (c) pteridophyte (d) gymnosperm

Q.

How did gymnosperms evolve?

Q. Cycas has _____________ in its coralloid roots.

1. brown algae
2. fungi
3. blue green algae
4. green algae

Q. Name a gymnosperm that has mycorrhizae .

Q. In angiosperms, all the four microspore of tetrad are formed from PMC by:

1. Gametic meiosis
2. Sporic meiosis
3. Zygotic meiosis
4. Mitosis

Q. Consider the following four statements (a-d) and select the option which includes all the correct ones.
(a) Ruminate endosperm is found in betel nut.
(b) Edible part of coconut is the endosperm.
(c) Mosaic endosperm is found in maize.
(d) After maturity, all endosperms become cellular.

1. (a), (b), (c) and (d)
2. (a) and (b)
3. (b), (c) and (d)
4. (c) and (d)