Subdivision Gymnospermae
Subdivision Gymnospermae: Overview
This topic covers concepts, such as, Gymnosperms, Habitat of Gymnosperms, Cycas & Archegonia etc.
Important Questions on Subdivision Gymnospermae
The largest ovules, largest male and female gametes and largest plants are found among
Largest sperms in the plant world are found in
The ‘wing’ of Pinus seed is derived from
Which one is the most advanced from evolutionary point of view?
Pinus differs from mango in having
Consider the following four statements. Which of the following statements are incorrect?
(A) The sporophyte in liverworts is more elaborate than in mosses.
(B) Salvinia is heterosporous.
(C) The life cycle of all seed-bearing plants are diplontic.
(D) In Pinus, male and female cones are borne on different trees.
The gametophyte is not an independent, free living generation in –
In which of the following organism, pigments are similar to that found in higher plants?
In Pinus gymnosperms, the haploid structure are
In gymnosperms like Pinus and Cycas, the endosperm is
Resin and turpentine are obtained from:
In Pinus, the pollen grain has 6 chromosomes then its endosperm will have ________ chromosomes.
A plant having seeds but lacking flowers and fruits belongs to
How many embryo sacs are present in a single megasporangium?
Name the division which seeds are not closed in fruits.
Fill up the Blanks with suitable words
The gametophytes in gymnosperms are ______ but Cycas shows ______ because of presence of multiciliate male gamete. The retained multicellular female gametophyte is also called ______ In this thick cuticle and _________ will be useful to reduce water loss.
A Sunken stomata
B. Zooidogamy
C. Endosperm
D. Dependent
