CBSE 12th Standard Biology Subject Sexual Reproduction in Flowering Plants Ncert Exemplar 1 Marks Questions With Solution 2021
By QB365 on 24 May, 2021
QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks
QB365 - Question Bank Software
CBSE 12th Standard Biology Subject Sexual Reproduction in Flowering Plants Ncert Exemplar 1 Marks Questions With Solution 2021
12th Standard CBSE
-
Reg.No. :
Biology
-
Name the part of gynoecium that determines the compatible nature of pollen grain.
(a)Stigma
-
What is nucellus?
(a)It is the mass of parenchymatous tissue surrounded by integuments in an ovule. It encloses embryo sac and provides nourishment to the developing embryo
-
Why are pollen grains produced in enormous quantity in Maize?
(a)Maize plants are pollinated by wind (Anemophilous) and it is the property of wind pollinated flowers to produce enormous quantity of small pollen grains to ensure pollination.
-
Give the name of the common function that cotyledons and nucellus perform
(a)The common function of nucellus and cotyledons are:
(i) storage of reserve food material
(ii) nourishment of embryo and embryo sac respectively -
What is the disadvantage of self-pollination?
(a)Disadvantage is that continuous, self-pollination causes inbreeding depression.
1 Marks
*****************************************
CBSE 12th Standard Biology Subject Sexual Reproduction in Flowering Plants Ncert Exemplar 1 Marks Questions With Solution 2021 Answer Keys
-
Stigma
-
It is the mass of parenchymatous tissue surrounded by integuments in an ovule. It encloses embryo sac and provides nourishment to the developing embryo
-
Maize plants are pollinated by wind (Anemophilous) and it is the property of wind pollinated flowers to produce enormous quantity of small pollen grains to ensure pollination.
-
The common function of nucellus and cotyledons are: (i) storage of reserve food material (ii) nourishment of embryo and embryo sac respectively
-
Disadvantage is that continuous, self-pollination causes inbreeding depression.
1 Marks
