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A : Poultry farming has definite advantage over live-stock rearing R : Poultry birds are easy to raise, can be acclimatised to a wide range of climatic conditions, have short life span and are prolific breeders

A dominant, independent, photosynthetic, thalloid or erect phase is represented by a haploid gametophyte and it alternates with the short-lived multicellular sporophyte totally or partially dependent on the gametophyte for its anchorage and nutrition. This type of pattern is present in

An organism X having breathing organs A lives on land. When organism X goes under water, it cannot survive for a long time unless carrying an oxygen cylinder. On the other hand, the organism Y having breathing organs B always lives in water and if taken out of water, it dies after a short while. A third organism Z having breathing orgains C and D which lives on the banks of ponds, lakes and rivers can survive on land as well as in water equally well. (a) What could organism X be? Name the breathing organs A. (b) What could organism Y be? Name the breathing orgains B. (c) What could organism Z be ? Name the breathing organs C and D (d) Out of X, Y and Z, which organism is (i) amphibian, (ii) aquatic, and (iii) terrestrial ?

________are a type of inexpensive digital camera that remains tethered to a computer and used for video conferencing, video chatting and live web broadcast.

[A] : Tail wagging dance is performed for short distances . It conveys both the distance and speed of the scout bees . [R] : Foraging bees keep touching the scout bees through dance to get the information mainly by olfactory stimulation .

How many statement is/are true? i. The primary root and its branches constitute the tap root system. ii. In monocot the primary root is short lived. iii. The root that arises from other part of the plane other than radicle is called adventitious root