Read the following statements and select the option
with correct statements
(a) In Wolfia, the highly reduced female gametophyte
present within ovule, is embryo sac.
(b) The ploidy level of endosperm in Cycas and
Eucalyptus is triploid.
(c) Azolla is a water fern.
(d) Majority of the red algae are marine with greater
abundance in the warmer areas.
(1) (a) and (b) only         

(2) (b) and (c) only

(3) (a), (b) and (c)

(4) (a), (c) and (d)

Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct?

Options : 

Select the correct statement.

(1) Salvinia, Ginkgo and Pinus all are gymnosperms

(2) Sequoia is one of the tallest trees

(3) The leaves of gymnosperms are not well adapted to extremes of climate

(4) Gymnosperms are both homosporous and heterosporous

Besides paddy fields, cyanobacteria are also found inside vegetative part of

(1) Pinus

(2) Cycas

(3) Equisetum

(4) Psilotum

Which of the following genera is associated with coralloid roots?

(1) Cycas

(2) Taxus

(3) Pinus

(4) Sequoia

Match the following selected the correct option.

1. A - (iv), B - (ii), C - (i), D - (iii)

2. A - (iv), B - (i), C - (ii), D - (iii)

3. A - (ii), B - (iii), C - (iv), D - (i)

4. A - (i), B - (iv), C - (iii), D - (ii)

Cycas is classified as a gymnosperms due to its

1. motile sperms

2. fruit formation

3. naked ovule

4. pycnoxylic wood

Which of the following statement is correct?

Pinus seeds cannot germinate and establish without fungal association. This is because:

1. its seeds contain inhibitors that prevent germination.

2. its embryo is immature.

3. it has an obligate association with mycorrhizae.

4. it has a very hard seed coat.