1. amphetamine
2. marijuna
3. pethidine
4. valium
valium
1. fertilization of the egg by two male gametes
2. fertilization of two eggs in the same embryo sac by two sperms brought by one pollen tube
3. fertilization of the egg and the central cell by two sperms brought by different pollen tubes
4. fertilization of the egg and the central cell by two sperms brought by the same pollen tube
fertilization of the egg and the central cell by two sperms brought by the same pollen tube
1. Cork lacks stomata but lenticels carry out transpiration
2. Passage cells help in transfer of food from cortex to phloem
3. Sieve tube elements possess cytoplasm but no nuclei
4. The shoot apical meristem has a quiescent centre
Sieve tube elements possess cytoplasm but no nuclei
1. When water is not available camels do not produce urine but store urea in tissues
2. Salmon fish excretes lot of stored salt through gill membrane when in fresh water
3. Paramecium discharges concentrated salt solution by contractile vacuoles
4. The body fluids of freshwater animals are generally hypotonic to surrounding water
When water is not available camels do not produce urine but store urea in tissues
1. fast passage of food through sieve pores in phloem elements with the help of electric stimulation
2. opening of stomatal pores during night by artificial light
3. making transient pores in the cell membrane to introduce gene constructs
4. purification of saline water with the help of a membrane system
making transient pores in the cell membrane to introduce gene constructs
1. zygotene
2. pachytene
3. diplotene
4. diakinesis
pachytene
1. Thyroid — hyperactivity in young children causes cretinism
2. Thymus — starts undergoing atrophy after puberty
3. Parathyroid — secretes parathormone which promotes movement of calcium ions from blood into bones during calcification
4. Pancreas — delta cells of the islets of Langerhans secrete a hormone which stimulates glycolysis in liver
Thymus — starts undergoing atrophy after puberty
1. Sunderbans and Rann of Kutch
2. Eastern Ghats and West Bengal
3. Eastern Himalaya and Western Ghats
4. Kerala and Punjab
Eastern Himalaya and Western Ghats
1. centriole, mitochondria and 9+2 arrangement of microtubules
2. centriole and mitochondria
3. mitochondria. and 9+2 arrangement of microtubules
4. 9+2 arrangment of microtubules only
centriole, mitochondria and 9+2 arrangement of microtubules
1. Prosopis, tree, scrub
2. Saccharum officinarum, grass, forest
3. Shorea robusta, herb, tropical rain forest
4. Acacia catechu, tree, coniferous forest
Prosopis, tree, scrub