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The ovule is attached to the placenta by...

The ovule is attached to the placenta by a stalk called ………… .

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Ovule is attached to the placenta by a stalk known as

The ovule is attached to placenta by means of a stalk called funicle/hilum.

A typical angiospermous ovule is attached to the placenta by means of a stalk called X. Body of the ovule fuses with X in the region called Y. Identify X and Y.

Consider the following statements and choose the correct option (a) Ovule is attached to the placenta by means of a stalk called filament (b) Ovule fuses with the stalk in the region called hilum (c) The two protective envelopes of the ovule are called integuments (d) The small opening in the tip of ovule is called germ pore

Ovule is attached to placenta of ovary wall by:

The stalk attaching ovule to the placenta is:

LAKHMIR SINGH & MANJIT KAUR-FRICTION-EXERCISE
  1. What is the purpose of using ball bearings in machines ?

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  2. Name any two machines in which bearings are used.

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  3. The ovule is attached to the placenta by a stalk called ………… .

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  4. Name one example from everyday life where wheels (or rollers) are used...

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  5. Why does oiling the axles of bicycle make the bicycle move more easily...

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  6. State one way in which the friction between wheel and its axle can be ...

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  7. Name two common lubricants.

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  8. Why do we sprinkle fine powder on carrom board ?

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  9. Which force gets reduced when the two surface in contact are polished ...

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  10. Why is the surface of a slide polished to make it smooth ?

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  11. Name the force which increases when the two surface in contact are mad...

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  12. What is the special name of frictional exerted by fluids (like air or ...

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  13. What is the name of 'special shape' which is given fo objects moving t...

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  14. Why are grooves provided in the soles of shoes ?

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  15. Why are treads made in the surface of tyres ?

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  16. Fill in the following blanks with suitable words : Friction always o...

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  17. Fill in the following blanks with suitable words : Sliding friction ...

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  18. Fill in the following blanks with suitable words : Friction produces...

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  19. Fill in the following blanks with suitable words : Friction prevent ...

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  20. Fill in the following blanks with suitable words : Sprinkling of pow...

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