Photosynthesis — Biology STD 11 Science — Question

Which is the dominant phase in Pteridophytes?

Rate of replacement of species along a gradient of habitats/ communities is called:

In Ascaris, _______ .

Polemoniales is tbe order which includes plant famllies Solanaceae and :

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.

Which among the following is an order?

During glycolysis the compounds PGAL and DHAP are formed from fructose 1,6- diphosphate by _______ .

_______ is a non-green runner like branch of stem, which develops from underground base of roots and found in Chrysanthemum.

Circlet of six chitinous teeth and backwardly directed bristles are present in _____ .