What would be true for the structure labeled with letter ‘X’ in the given diagram showing the ultrastructure of Chlamydomanas?

  

1. It is the region of the chloroplast where circular DNA is present
2. It is associated with the operation of a carbon-concentrating mechanism (CCM)
3. It is the inclusion body with accumulated toxic wastes for elimination
4. It is filled with air and is responsible for buoyancy of the organism

The diagram shows a sorus in section in ferns. What would be the name for A?

1. Annulus
2. Placenta
3. Indusium
4. Stomium

In the given longitudinal section of archegonium of moss identify A, B, C and D respectively:
 

1. Ventral canal cell, Neck canal cell, Egg, Venter
2. Ventral canal cell, Neck canal cell, Venter, Egg
3. Neck canal cell, Ventral canal cell, Venter, Egg
4. Neck canal cell, Ventral canal cell, Egg, Venter

Consider the given two statements:

I. The term ‘embryophytes’ is an appropriate synonym for plants.
II. The occurrence of a multicellular, matrotrophic embryo in plants from bryophytes through angiosperms.

1. Both I and II are correct and II explains I
2. Both I and II are incorrect but II does not explain I
3. I is correct but II is incorrect
4. Both I and II are incorrect

Consider the two trends in evolution of plants:

I. A reduction of vascular tissues occurs from gymnosperms and woody dicots to herbaceous dicots to monocots
II. The gametophytes of vascular plants have become smaller and simpler

1. Both I and II are correct
2. Only I is correct
3. Only II is correct
4. Both I and II are incorrect

The seed of a gymnosperm is a complex structure with three generations locked up in it. Identify the correct match:

I. Female gametophyte: Old generation
II. Seed coat: Present generation
III. Embryo: Future generation

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

The description of which of the following features of reproductive structures of Funaria is correct?

I. Reproductive organs are borne on separate branches of the same thallus
II. Antheridia are club shaped
III. Archegonia are flask shaped

1. I and II only
2. I and III only
3. II and III only
4. I, II and III

All the following regarding Dryopteris are true except:
1. Involute vernation
2. Obliquely growing subterranean rhizome
3. Large compound leaves called fronds
4. Hair like ramenta covering petiole

In Cycas:

I. Micro sporophylls bear two elongated sac like structures at the base on the ventral side called pollen sacs.
II. Pollen grains are winged.
III. Megasporophylls are compact when young but spread apart when mature.
IV. Each megasporophyll has (a) bract scale and (b) ovuliferous scale which bears 2 ovules on the ventral side.

1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II III and IV are correct

Seeds make their appearance for the first time in gymnosperms. All the following factors are responsible for its development except:
1. Heterospory and differentiation of sporophylls and sporangia
2. Retention of megaspore within the megasporangium
3. Female gametophyte devoid of any integument
4. Development of young sporophyte within tissue of the megasporangium