Bryophytes

Moss peat is used as a packing material for sending flowers and live plants to distant places because:

1. it is easily available

2. it is hygroscopic

3. it reduces transpiration

4. it serves as a disinfectant

In a moss the sporophyte:

1.	is partially parasitic on the gametophyte
2.	produces gametes that give rise to the gametophyte
3.	arises from a spore produced from the gametophyte
4.	manufactures food for itself, as well as for the gametophyte

Flagellated male gametes are present in all three of which one of the following sets?

1. Anthoceros, Funaria, and Spirogyra

2. Zygnema, Saprolegnia, and Hydrilla

3. Fucus, Marsilea, and Calotropis

4. Riccia, Dryopteris, and Cycas

Male and female gametophytes are independent and free-living in:
1. Mustard
2. Castor
3. Pinus
4. Sphagnum

Which of the following plants is monoecious?

1. Marchantia polymorpha

2. Cycas circinalis

3. Carica papaya

4. Chara

Given below are two statements : One is labelled as Assertion (A) and the other is labelled Reason (R):

Assertion (A):	The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason (R):	Protonema develops directly from spores produced in capsule.

In the light of the above statements, choose the most appropriate answer from the options given below:

1.	(A) is False but (R) is True.
2.	Both (A) and (R) are True and (R) is the correct explanation of (A).
3.	Both (A) and (R) are True but (R) is not the correct explanation of (A).
4.	(A) is True but (R) is False.

In bryophytes, the gemmae help in which one of the following?

1.	Nutrient absorption	2.	Gaseous exchange
3.	Sexual reproduction	4.	Asexual reproduction

The correct sequence of events in the life cycle of bryophytes is
A. Fusion of antherozoid with egg.
B. Attachment of gametophyte to substratum.
C. Reduction division to produce haploid spores.
D. Formation of sporophyte.
E. Release of antherozoids into water.
Choose the correct answer from the options given below:

1.	B, E, A, D, C	2.	D, E, A, B, C
3.	D, E, A, C, B	4.	B, E, A, C, D