Question

In the female cone of Pinus
(a) There are two sessile ovules at the basis of each ovuliferous scale.
(b) Each ovule is anatropous.
(c) The nucleus is surrounded by two integuments.
(d) All the megaspore produced by the revision of the megaspore mother cell are.

Answer 1

Hint: A cone is an organ on a plant that belongs to the division Pinophyta or conifers that contains the reproductive structures. The familiar woody cone is the female cone that produces seeds and is woody in nature.

Complete answer:
In the female cone of pinus, bract scales and ovuliferous scales are present, it carries two sessile ovules at the basis of each ovuliferous scale. The ovuliferous scale is woody and it has two sessile ovules on the upper surface. A cone is the part of the reproductive organ in plants belonging to the division Pinophyta or conifers.
Male cones bear pollen are covered with many fertile scales, each of which bears two pollen sacs. Whereas female cones bear ovules, borne on the same tree, consists of several spirally arranged bracts which are modified leaves. Each bract is located below a scale with two ovules called potential seeds. In spring or early summer, the pollen sacs release pollen through longitudinal slits that reach the ovules through wind and fertilization takes place.

So, the correct answer is,'There are two sessile ovules at the basis of each ovuliferous scale.'

Note: -The name "cone" is derived from the fact that the shape in some species resembles a geometric cone. The individual plates of a cone are called scales.
-The female cone/megastrobilus/seed cone/ ovulate cone contains ovules. On fertilization by pollen, ovules become seeds.
-The female cone structure is more markedly different between the different conifer families and is often crucial for the identification of many species of conifers.