In Pinus,

I. The stem is branched

II. Roots have fungal association in the form of mycorrhiza

III. The male and female strobili are borne on different trees

Of the above statements:

(1) Only I is correct

(2) Only II is correct

(3) Only I and II are correct

(4) I, II and III are correct

Select the mismatch

Conifers are adapted to tolerate extreme environmental conditions because of

(1) broad hardy leaves

(2) superficial stomata

(3) thick cuticle

(4) the presence of vessels

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

Cycas and Adiantum resemble each other in having

(1) seeds

(2) motile sperms

(3) cambium

(4) vessels

A prokaryotic autotrophic nitrogen fixing symbiont is found in

(1) Cycas

(2) Cicer

(3) Pisum

(4) Alnus

Ectophloic Siphonostele is found in

(1) Osmunda and Equisetum

(2) Marsilea and Botrychium

(3) Adiantum and Cucurbitaceae

(4) Dicksonia and Maidenhair fern

In whcih of the following groups are seeds present?

(1) Psilophyta

(2) Ginkgopsida

(3) Lycopodiophyta

(4) Bryophyta