Structure of Megasporangium

Q. In a fertilized ovule n, 2n and 3n conditions occur respectively in:

1. Antipodal, nucellus and endosperm
2. Megaspore mother cell, nucellus and endosperm
3. Egg, nucellus and microspore
4. Endosperm, micropyle and egg

Q.

___ represents the junction between ovule and funicle.

Q.

Identify the labelled parts of the given ovule.

1. (i) - Micropyle, (ii) - Nucellus, (iii) - Embryo Sac, (iv) - Chalaza, (v) - Funicle

2. (i) - Micropyle, (ii) - Endosperm, (iii) - Nucellus, (iv) - Funicle, (v) - Stalk

3. (i) - Integument, (ii) - Embryo Sac, (iii) - Nucellus, (iv) - Chalaza, (v) - Funicle

4. (i) - Apical Pore, (ii) - Endosperm, (iii) - Embryo Sac, (iv) - Hilum, (v) -Funicle

Q. Number of archegonia in pinus ovule is

1. 2
2. 2 - 3
3. 2 - 6
4. 2 - 8

Q.

Which of the following is the actual megasporangium tissue?

1. Funicle

2. Hilum

3. Nucellus

4. Integuments

Q. Among the following, which does not belong to sporophytic generation in Pinus?

1. Roots
2. Endosperm
3. Long shoot
4. Dwarf shoot

Q. The flagellated larva of Leucosolenia is known as

1. Planula
2. Hydrula
3. Parenchymula
4. Ephyra

Q. In Pinus ovule the number of integuments is

1. 1
2. 3
3. 4
4. 2