Sexual reproduction in Plants

1. A typical angiosperm anther contains :-
(1) Three microsporangia
(2) Four microsporangia
(3) Two microsporangia
(4) One microsporangia

2. The outer wall of pollen grain is formed of :-
(1) Cellulose
(2) Pectocellulose
(3) Lignin
(4) Sporopollenin

3. In over 60 percent of angiosperms, pollen grainsare shed at :-
(1) One celled stage
(2) Two celled stage
(3) Three celled stage
(4) Two or three celled stage

4. Which of the following statement is incorrect?
(1) Pollen grains of many species cause severe allergies in some people
(2) Pollen grains are rich in nutrients
(3) Pollen viability is maintained for several months in all plant species
(4) Each cell of sporogenous tissue is potential pollen mother cell

5. The body of the ovule fuses with funicle in the region called :-
(1) Raphe
(2) Hilum
(3) Chalaza
(4) Endothecium

Which statement about fungal nutrition is not true ?
(1) Some fungi obtain their own food from dead organic matter
(2) Some fungi form mutualistic associations with other organism
(3) Fungi can make some of the compounds that are vitamins for animals
(4) Facultative parasites can grow only on their specific hosts.

6. Consider the following statements about mycoplasma :
(I) It is pleumorphic organism which lack cell wall
(II) Mycoplasma is the smallest living organism
(III) They can not survive without oxygen
(IV) Many mycoplasma are pathogenic in animals and plants.Which of the statements given above are correct?
(1) I, II and III
(2) II, III and IV
(3) I II and IV
(4) I, III and IV

7. Choose the incorrect match out of following :-
(1) Albugo – Parasitic fungi on mustard
(2) Neurospora – Used in genetic works
(3) Penicillum – Source of antibiotics
(4) Ustilago – Rust on wheat

8. power house of cell
1. mitochondria
2. lysosome
3. peroxisome
4 gb

9. lysosome contain
1.serum
2. lysin
3. permease
4. ptylin

10. double membranous structure are.
1.nucleus & lysosome
2. mitochondria & chloroplast
3. both
4. none