MCQs
Set 1
1. Megasporogenesis refers to the:
A. Formation of pollen grains
B. Formation of megaspores from MMC
C. Formation of zygote
D. Fusion of gametes
2. Megaspore Mother Cell (MMC) is located in the:
A. Chalazal region of nucellus
B. Micropylar region of nucellus
C. Ovary wall
D. Embryo sac
3. The Megaspore Mother Cell (MMC) is:
A. Haploid
B. Diploid
C. Triploid
D. Tetraploid
4. Meiosis in MMC produces:
A. Two megaspores
B. Four megaspores
C. Eight megaspores
D. One megaspore
5. In most angiosperms, the number of functional megaspores is:
A. 4
B. 3
C. 2
D. 1
6. Development of embryo sac from a single megaspore is called:
A. Bisporic development
B. Monosporic development
C. Tetrasporic development
D. Polysporic development
7. The ploidy of nucellus cells is:
A. n
B. 2n
C. 3n
D. 4n
8. The ploidy of the functional megaspore is:
A. n
B. 2n
C. 3n
D. 4n
9. The female gametophyte (embryo sac) is:
A. Diploid
B. Haploid
C. Triploid
D. Tetraploid
10. Mature angiosperm embryo sac is:
A. 8-celled and 8-nucleate
B. 7-celled and 8-nucleate
C. 8-celled and 7-nucleate
D. 7-celled and 7-nucleate
11. The egg apparatus consists of:
A. 1 egg cell and 3 synergids
B. 1 egg cell and 2 synergids
C. 2 egg cells and 1 synergid
D. 3 egg cells
12. The filiform apparatus is present in:
A. Egg cell
B. Antipodal cells
C. Synergids
D. Polar nuclei
13. Antipodal cells are located at the:
A. Micropylar end
B. Chalazal end
C. Center of embryo sac
D. Nucellus
14. The large central cell contains:
A. Two egg nuclei
B. Two polar nuclei
C. Three nuclei
D. One nucleus
15. Nuclear divisions in embryo sac formation are:
A. Mitotic free nuclear divisions
B. Meiotic divisions
C. Amitotic divisions
D. Binary fission
Set 2
1. Megasporogenesis occurs in the:
A. Ovary
B. Nucellus
C. Integument
D. Funicle
2. The megaspore mother cell originates from:
A. Sporophytic tissue
B. Gametophytic tissue
C. Endosperm
D. Embryo sac
3. Number of megaspores produced after meiosis of MMC:
A. 2
B. 4
C. 6
D. 8
4. In most angiosperms, embryo sac development is:
A. Bisporic
B. Tetrasporic
C. Monosporic
D. Polysporic
5. In the mature embryo sac, the number of nuclei is:
A. 6
B. 7
C. 8
D. 9
6. The mature embryo sac contains how many cells?
A. 6
B. 7
C. 8
D. 9
7. The egg apparatus is present at the:
A. Chalazal end
B. Micropylar end
C. Central region
D. Funicle end
8. Egg apparatus consists of:
A. 1 egg + 2 synergids
B. 2 eggs + 1 synergid
C. 3 synergids
D. 1 egg + 3 synergids
9. Antipodal cells are located at:
A. Micropylar end
B. Chalazal end
C. Middle region
D. Integument
10. The central cell contains:
A. Two egg nuclei
B. Two polar nuclei
C. Three nuclei
D. Four nuclei
11. Filiform apparatus is present in:
A. Egg cell
B. Synergids
C. Antipodals
D. Polar nuclei
12. Function of filiform apparatus:
A. Protect embryo sac
B. Guide pollen tube
C. Produce endosperm
D. Form zygote
13. MMC is:
A. Haploid
B. Diploid
C. Triploid
D. Tetraploid
14. Functional megaspore is:
A. Haploid
B. Diploid
C. Triploid
D. Tetraploid
15. Female gametophyte is:
A. Diploid
B. Haploid
C. Triploid
D. Tetraploid
Assertion‐Reason MCQs
16.
Assertion (A): MMC undergoes meiosis.
Reason (R): Meiosis reduces chromosome number to haploid.
A. Both A and R true, R correct explanation
B. Both true but R not explanation
C. A true R false
D. A false R true
17.
Assertion (A): Embryo sac is 8-nucleate.
Reason (R): Only 6 nuclei form cells.
A. Both true
B. Both false
C. A true R false
D. A false R true
18.
Assertion (A): Antipodal cells lie at chalazal end.
Reason (R): Chalaza is opposite micropyle.
A. Both true and R explains A
B. Both true but R not explanation
C. A true R false
D. A false R true
19.
Assertion (A): Synergids help in pollen tube guidance.
Reason (R): They possess filiform apparatus.
A. Both true and R explains A
B. Both true but R not explanation
C. A true R false
D. A false R true
20.
Assertion (A): Embryo sac is haploid.
Reason (R): It develops from a functional megaspore.
A. Both true and R correct explanation
B. Both true but R not explanation
C. A true R false
D. A false R true
21. Number of mitotic divisions required to form 8-nucleate embryo sac:
A. 1
B. 2
C. 3
D. 4
22. Total nuclei in embryo sac before cellularization:
A. 4
B. 6
C. 8
D. 10
23. Free nuclear divisions mean:
A. Cytoplasm divides first
B. Nucleus divides without cell wall formation
C. Chromosomes divide without spindle
D. Cells divide normally
24. Number of cells at micropylar end:
A. 1
B. 2
C. 3
D. 4
25. Number of cells at chalazal end:
A. 1
B. 2
C. 3
D. 4
26. Number of polar nuclei in embryo sac:
A. 1
B. 2
C. 3
D. 4
27. Egg cell participates in:
A. Double fertilization
B. Triple fusion
C. Syngamy
D. Endosperm formation
. Polar nuclei participate in:28
A. Syngamy
B. Triple fusion
C. Meiosis
D. Pollination
29. The embryo sac develops inside:
A. Ovary
B. Ovule
C. Style
D. Stigma
30. The tissue surrounding embryo sac is:
A. Endosperm
B. Nucellus
C. Funicle
D. Chalaza