How does smoking tobacco in human lead to oxygen deficiency in their body?
Smoking increases carbon monoxide (CO) content in blood and reduces the concentration of haembound oxygen. This causes oxygen deficiency in the body.
(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.Name the following:
(a) The semi-dwarf variety of wheat is high-yielding and disease-resistant.
(b) Any one inter-specific hybrid mammal.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).