• 072920 77839
  • info@smartachievers.in
Menu
Back
  • JEE ADVANCE
  • JEE MAIN
  • NEET
  • BITSAT
  • CBSE BOARD
  • UP BOARD
  • CUET
JEE ADVANCE
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
JEE MAIN
  • CLASS XI - XII
  • CRASH COURSE
CRASH COURSE
NEET
  • CLASS XI - XII
  • CRASH COURSE
BITSAT
  • CLASS XI - XII
CBSE BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
  • CLASS VI
  • CLASS VII
  • CLASS VIII
UP BOARD
  • CLASS IX
  • CLASS X
  • CLASS XI
  • CLASS XII
CUET
  • CRASH COURSE
Courses


Solution


Q.

Assertion: Pollen grains reach directly to the egg, which is seated deep in the ovarian cavity.
Reason: To effect fertilisation, the pollen grains germinate on the stigma.
1 Both assertion and reason are correct and reason is the correct explanation of assertion  
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.  
3 Assertion is true but Reason is false.  
4 Assertion is false but Reason is true.  

Ans.

(4)

In angiosperms the female gametophyte is seated deep in the ovarian cavity, quite away from the stigma. In seed plants, the male gametes are brought to the egg containing female gametophyte by a pollen tube. A pollen grain does not pass down the stigma. Only its pollen tube does so. Thus, assertion is false but reason is true.