Reproduction in Pteridophytes

Q.

What is the function of the Zona Pellucida?

Q.

Mosses and ferns are found in moist and shady places because both have which of the following requirements?

1. Do not need sunlight for photosynthesis

2. Cannot compete with sun-loving plants

3. Require the presence of water for fertilisation

4. Depend for their nutrition on microorganisms which can survive only at low temperature

Q. Spores are produced by mitosis in spore mother cells present in sporangia in pteridophytes

1. True
2. False

Q. Select the correct option regarding the ploidy level of different structures of an angiospermous ovule.

1. Nucellus = 2n, MMC = 2n, Functional megaspore = 2n, Funicle = 2n.
2. Nucellus = n, MMC = 2n, Functional megaspore = n, Funicle = n.
   
3. Nucellus = 2n, MMC = 2n, Functional megaspore = n, Funicle = 2n
4. Nucellus = n, MMC = 2n, Functional megaspore = 2n, Funicle = n.

Q.

What is the process exhibited by cryptogams as part of their reproductive cycle that enables them to stabilise chromosomal number required ?

1. Respiration

2. Osmosis

3. Alternation of Generations

4. Diffusion

Q. Spores in pteridophytes are produced in special structures called

1. sporangia
2. archegonia
3. antheridia
4. gametangia

Q. A cluster of spore producing structures present on the lower surface of the fern leaves.

1. Sori
2. Anther
3. Sporangia
4. Cones

Q.

The adaptability of pteridophytes can be best signified by_________. This is why it is also called as the 'Resurrection Plant'.

1. Cyathea dealbata

2. Equisetum

3. Selaginella heterosporous

4. Selaginella lepidophylla

Q. A new fern plant can arise from fern prothallus without fertilisation. This illustrates

1. apospory
2. apogamy
3. parthenocarpy
4. parthenogenesis

Q. Which of the following structures are found in the ovule even before the megaspore is formed?
I) Nucellus
II) Egg cell
III) Funicle
IV) Polar nuclei

1. III and I
2. I and II
3. II and III
4. IV and II

Q. In pteridophytes, the sporophyte is produced by the:

1. Gamete
2. Spore
3. Zygote
4. Gametophyte

Q.

Statement 1: All enterocoelomates are deuterostomes.

Statement 2: In them, blastopore of blastocoel develops into anus.

1. Both statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.

2. Statement 1 is correct and statement 2 is incorrect.

3. Both statements 1 and 2 are incorrect.

4. Both statements 1 and 2 are correct and statement 2 is not the explanation ofstatement 1.

Q. In bryophytes and pteridophytes, transport of male gametes requires:

1. Wind
2. Insects
3. Birds
4. Water