(a) Highlight the role of thymus as a lymphoid organ.
(b) Name the cells that are released from the above-mentioned gland. Mention how they help in immunity.(a) Thymus being the primary lymphoid organ provides the micro-environment for the maturation of the T-lymphocytes.
(b) T- cells are released from the thymus. The T-lymphocytes help the B-cells to produce antibodies. They mediate the CMI (cell-mediated immunity)Write the similarity between the wing of a butterfly and the wing of a bat. What do you infer from the above with reference to evolution?
A garden pea plant (A) produced inflated yellow pod, and another plant (B) of the same species produced constricted green pods. Identify the dominant traits.
Mention the unique flowering phenomenon exhibited by Strobilanthus kunthiana (neelakuranaji).
Name the following:
(a) The semi-dwarf variety of wheat is high-yielding and disease-resistant.
(b) Any one inter-specific hybrid mammal.