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What is Apogamy and apospory?
Sweet potato is the modification of
a) stem b) adventitious root c) tap root d) none of these
what is autoclaved herring sperm DNA ?
What is 'Plasmatic Growth'?
what would happen if meristems cease to divide? does this ever happen?
''2,4 - D widely used to kill dicotyledonous weeds , does not affect mature moocotyledonous plants. ''
why does it afffect oly dicotyledonous weeds and not monocotyledonous weed.?
Give 3 differences between arithmetic geometric growth.
why are auxins present in human urine??
what is dormancy and abscission??
describe a tumour using the terms differentiation, dedifferentiation, redifferentiation
decapitaion is largely applied in hedge making and tea plantations .why ?
what are plasmodesmatal connections?
can we call the swelling of wood piece when we put it in water as its growth,why?
Subjecting the growing of a biennial plant to a cold treatment stimulates a subsequent photoperiodic flowering response. Explain.
what is richmond lang effect?
distinguish between polysepalous and gamosepalous calyx
what are meristems, lateral meristems, vascular cambium, and cork cambium??
what is conspicuous nuclei?
give examples of open differentiation correlating the position of a cell to its position in an organ.
difference between absolute and realtive growth rate.
removal of shoot tips results in growth of lateral buds. why?
Plant growth is open type of growth.Discuss?
difference between auxin and cytokinin
what is meant by rosette habit?
What will be the direction of movement of water , when a solution A having water potential of - 9 bars and another solution B - 4 bars is separated by a semipermeable membrane?and WHy?
What is function of gibberellines
What is vernalization?? i didnt understand the topic well. Also what is photoperiodism.
Manganese is required in photolysis of water during photosynthesis,What is the meaning of this statement?
what is Vernalization???????????
What is function of ethylene.
WHAT IS -VE AND +VE ALLOSTERIC MODULATION??
plant growth is generally indeterminate. explain
how is the process of vernalisation advantageous to plant..?
for any and every phase of growth,differentiation and development of plants, one or the other PGR has some
what is the importance of bolting in rosette plants ?
TREATMENT OF SEED AT LOW TEMPERATURE UNDER MOIST CONDITION TO BREAK ITS DORMANCY IS CALLED 1] SACRIFICATION 2] VERNALIZATION 3] CHELATION 4]STARTIFICATION
what is parthenocarpy..??
teacher , plz give a list of plants that show hypogeal and epigeal germination.
specially mention in which category these plants fall - sunflower, castor, groundnut
five main groups of natural plant growth regulators. Write a note on
discovery, physiological functions and agricultural/horticultural
applications of any one of them.
What is senescence?
differences between photoperiodism & vernalization
What is a-amylase test? (Here 'a' stands for alpha)
THE NATURAL PLANT HORMONES WERE FIRST ISOLATED FROM ...1] CORN GERM OIL & HUMAN URINE 2] COTTON FRUITS SPINACH LEAVES & RICE PLANTS 3] AVENA COLEOPTILE SPINACH LEAVES & THE FUNGUS GIBBERELLA 4]HUMAN URINE & RICE SEEDLING
c)Sigmoid growth curve
The term heterosis was first coined by...????
Desert animals need to conserve water. Kidneys regulate the concentration of salt and water in blood through the formation and excretion of urine. A kidney is composed of approx. 1 million units called nephrons. The kidneys of desert animals have modofied nephrons which help them survive long period without water. Which one of these options would be the expected modification?
1. A very short collecting duct
2. A very long loop of Henle
3. A very short distal tubule
4. A very large Bowman's capsule
show diffrent phases of growth in plants with conditons?
Does the growth pattern in plants differ from that in animals? Do all the parts of the plant grow indefinitely? If not , name the regions , which can grow indefinitely.
WHAT ARE THE TYPICAL DIFFERENCES BETWEEN DIFFERENTIATION ,DEDIFFERENTIATION AND REDIFFERENTIATION? EXPLAIN
WHAT WAS F W WENT EXPERIMENT OF ISOLATED AUXINS ???????
how to get the sample papers of UP board for class12? FRIENSDS please help
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