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Which one of the following is a xerophytic plant in which the stem is modified into a flat green and succulent structure:
The floral formula ⊕ ⚥ K(5) C(5) A5 G(2) is that of:
Diadelphous is found in
The wheat grain has an embryo with one large, shield-shaped cotyledon known as?
Roots play an insignificant role in the absorption of water in:
Which of the following is not a stem modification?
Stems modified into flat green organs performing the functions of leaves are known as?
Match Column-I with Column-II Column-I (a) Chlamydomonas (b) Cycas (c) Selaginella (d) Sphagnum Column-II (i) Moss (ii) Pteridophyte (iii) Algae (iv) Gymnosperm
Which of the following diseases is/are not completely curable?
In general, the egg apparatus of the embryo sac in angiosperms consists of:
Pollen grains can be stored for several years in liquid nitrogen having a temperature of:
Functional megaspore in an angiosperm develops into:
Winged pollen grains are present in:
Anemophilly type of pollination is found in:
What type of pollination takes place in Vallisneria?
Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
Which of the following has proved helpful in preserving pollens as fossils?
The residual persistent part which forms the perisperm in the seeds of beet is :
What is common between vegetative reproduction and Apomixis?
Consider the two surgical procedures (A and B) given below and choose the correct statement: