Choose the correct combination respect to their adaptation
(A) Aquatic mammals- Storage of urea in blood
(B) Desert plants- Stomata opens only day time
(C) Zooplankton- Suspended development
(D) Polar bear- Aestivation

Consider the following statements with respect to the flowering plants and choose the correct option (a) Pollen grains represent the male gametes (b) Functional megaspore develops innto embryo sac that represents the female gamete (c) Transfer of pollen grains from anther to stigma of different plant is known as xenogamy (d) Transfer of pollen grains from anther to stigma of another flower of the same plant is known as geitonogamy

Which of the following is correct with respect to kingdom Plantae? (a.) All plants are heterosporous. (b.) All plants contain vascular tissue. (c.) In plants, antheridia are the female sex organ. (d.)Except for algae, all plants bear embryo.

Choose the correct combinations (a) Tubellaria-mostly free living flat worms with - convoluta mucus formating rhabdites in body wall (b) Trematoda - Comkmonly called flukes and bear - Bilharzia two suckers (c ) Cestoda -Ecto - and endoparasite , body segmented -Echinococcus (d) Phasmidia - Amphids -formating chemorceptor fucation -Trichuris

Which of the following statement is/are not true (A). In CAM plants stomata open during dark and remain closed during the day (B). Role of Na^(+) in stomatal opening in now universally accepted (C). The water potential of roots cells is higher than the water potential of soil (D). Capillarity theory is the most accepted thory of water movement through plants. (E). The walls of xylem vessels made up of ligno-cellulose have strong affinity for water molecules