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The leaves, flowers and fruits of the sa...

The leaves, flowers and fruits of the same tree not only have limited dimensions but also appear and fall periodically and some time repeatedly.

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Raindrops are falling with velocity 10 sqrt2 m/s making and angle 45^(@) with the vertical. The drops appear to be falling vertically to a man running with constant velocity . The velocity of rain drops change such that the rain drops now appear to be falling vertically with sqrt3 times the velcoity it appeared earlier to the same person running with same velocity . The magnitude of velocity of man w.r.t ground is

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A satellite having time period of revolution 6830 sec is travelling in the same direction as the rotation of the earth, i.e. from west to east, the time interval between the two successive times at which it will appear vertically overhead to an observer at a fixed point on the equator is

A ball of mass 100 gm is projected vertically upwards from the ground with a velocity of 49m//sec . At the same time another identical ball is dropped from a height of 98 m to fall freely along the same path as that followed by the first ball. After some time the two balls collide and stick together and finally fall to the ground. Find the time of flight of the masses.

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During autumn, a boy notices that road is littered with orange leaves He looks up to find that the tree is devoid of most leaves, while some of them are still falling . The phytohormone responsible for this causes ………….

Raindrops are falling with velocity 10 sqrt2 m/s making and angle 45^(@) with the vertical. The drops appear to be falling vertically to a man running with constant velocity . The velocity of rain drops change such that the rain drops now appear to be falling vertically with sqrt3 times the velcoity it appeared earlier to the same person running with same velocity . After the velocity of rain drops change the magnitude of velocity of raindrops with respect to ground is

ALLEN-PLANT GROWTH AND DEVELOPMENT-True and False
  1. All cell of a plant are descendents of the zygote.

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  2. The leaves, flowers and fruits of the same tree not only have limited ...

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  3. Development of a mature plant a zygote (ferilized egg) follow a precis...

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  4. Read the following statements and find out the INCORRECT statement. ...

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  5. Choose the correct or incorrect statement regarding given figure: ...

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  6. Water provides the medium for enzymatic activites needed for growth wh...

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  7. Assertion : Nutrients are required by plants for the synthesis of prot...

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  8. Auxin (IAA) was first isolated from

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  9. Spraying juvenile conifers with GA hastens the maturity period thus le...

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  10. Kinetin occur naturally in plants.

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  11. Natural cyitokinins are sytnhesised in regions where rapid cell diviso...

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  12. Ethylene is used to initiate flowering and for synchorinising fruit se...

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  13. Ethephon hastens fruit ripening in tomatoes and apples and accelerates...

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  14. ABA plays an important role in seed development, maturation and dorman...

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  15. Events like vernalization, flowering dormancy, seed germination and pl...

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  16. In certain plants relative duration of light and dark period plays a i...

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  17. Assertion : Vernalisation is the promotion of flowering by a period of...

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  18. Some varieties of wheat are known as spring wheat while others are cal...

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  19. Bennials are monocarpic plants that normally flower and die in the sec...

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  20. Effect of vernalisation can not be seen in sugarbeet, cabbages and car...

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