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Subject: Science, asked on 13/3/18

Q. What is the main difference between sperms and eggs of humans? Write the importance of this difference.

Subject: Science, asked on 13/3/18

Is sperm a single cell ?

Subject: Science, asked on 12/3/18

name the part where germ cells if a flower located

Subject: Science, asked on 12/3/18

which is the organ that is equal to ovary in flowers , ovule and the egg cell as related to female body in humans and in male plants and humans?? 
also give reasoned explaination why pollen grains( releases male gametes) is equal to the female gamete ??

Subject: Science, asked on 12/3/18

what is a scion?

Subject: Science, asked on 7/3/18

Q. Compare and contrast the ways in which yeast grows in both the below case. 
Activity 8.1
  • Dissolve about 10 gm of sugar in 100 ml of water
  • Take 200 mL of this solution in a test tube and add a pinch of yeast granules to it.
  • Put a cotton plug on the mouth of the test tube and keep it to a warm place.
  • After 1 or 2 hours, put a small drop of yeast culture from the test tube on a slide and cove it with a coverslip.
  • Observe the slide under a microscope


Activity 8.2 
• Wet a slice of bread, and keep it in a cool, moist and dark place. 
• Observe the surface of the slice with a magnifying glass. 
• Record your observations for a week.
 

Subject: Science, asked on 6/3/18

difference between dna -copying ,replication and duplication?

Subject: Science, asked on 6/3/18

what is the difference between normal dna copying in a cell and dna copying during reproduction? how does it differ in reproduction in asexual and sexual reproduction??

Subject: Science, asked on 1/3/18

Are these diagrams correct and capable to fetch full marks for themselves? 
Or do I need to label various parts of amoeba and plasmodium. If yes then please do show!
 


 

Subject: Science, asked on 28/2/18

Is pineapple a unisexual plant?

Subject: Science, asked on 27/2/18

Solve Ques 10
Q.10. State the changes that takes place in the uterus when :
(i) Implantation of embryo has occurred.
(ii) Female egg/gamete is not fertilised.

Subject: Science, asked on 26/2/18

Plz list the important diagrams from reproduction class 10 cbse

Subject: Science, asked on 24/2/18

Ravi was told to study the kidney beans seed which was soaked overnight in water.
(a) Which structure did he find that covered the seed.
(b) which structure in seed gives rise to radicle and plumule

Subject: Science, asked on 24/2/18

why shouldn't the cotyledons dry in the angiosperms experiment?

Subject: Science, asked on 23/2/18

Solve this:
Q.(b).


(i) Name the part marked 'A' in diagram.
(ii) How does 'A' reaches part 'B'?
(iii) State importance of the part 'C'.
(iv) What happens to the part marked 'D' after fertilisation is over?

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