Respiration and Energy Transfer — Biology STD 11 Science — Question

Renal failure is typically detected by biochemical analysis of blood which shows _______.

Collenchyma is a type of ________ tissue.

A cell that lacks chloroplast does not

Which of the following features is used to identify a male cockroach from a female cockroach?

Plants having little or no secondary growth are

The ozone layer is found in the :

A decrease in blood pressure/volume will not cause the release of

Lipids associated with cell membrane are _________ .

Adenine is :

Invertebrates, bony fishes, tadpoles, etc. are ammonotelic. Whereas birds, reptiles, land snails, etc. are uricotelic. What would be the probable reason for the difference in mode of excretion?
i. Ammonotelic organisms conserve water as conversion of ammonia to uric acid requires large amount of water.
ii. Elimination of ammonia requires large quantity of water, thus ammonotelism is seen in aquatic animals.
iii. Uricotelic organisms require moderate water for eliminating urea and formation of ammonia requires expenditure of energy. Thus, to conserve water and energy, these animals have uricotelism mode of excretion.
iv. Aquatic animals can retain ammonia and store it in the body for long time.