331823
Match the columns I and II Column I Column II A Trimerous flowers P Dicotyledons B Reticulate venation Q Cereals C One polar nuclei R Haploid
1 A – R, B – P, C – Q,
2 A – Q, B – R, C – P,
3 A – P, B – R, C – Q,
4 A – Q, B – P, C – R
Explanation:
A.Trimerous flowers - Q. Cereals B. Reticulate venation - P. Dicotyledons C. One polar nuclei - R. Haploid
BIOXI03: PLANT KINGDOM
331824
In flowering plants, meiosis occurs at the time of
1 Formation of female spores
2 Formation of pollen grains
3 Formation of root primordia
4 Both 1 and 2
Explanation:
Megaspore mother cell undergoes meiosis to form 4 haploid megaspores, out of which 3 degenerate. The last functional megaspore develops into embryo sac. Microspore mother cell undergoes meiosis to form 4 microspores or pollen grains. Each microspore forms 2 male gametes.
BIOXI03: PLANT KINGDOM
331825
The embryo sac of an angiosperm is made up of
1 8 cells
2 7 cells and 8 nuclei
3 8 nuclei
4 7 cells and 7 nuclei
Explanation:
The seven cells are; one egg cell, two synergids, three antipodal cells and one secondary nucleus. The secondary nucleus contains two nuclei; while the other cells contain one nucleus each.
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BIOXI03: PLANT KINGDOM
331822
Male sex organ in flower is
1 Antheridia
2 Stamens
3 Spermatangia
4 Carpel
Explanation:
The male sex organ in a flower is the stamen.
BIOXI03: PLANT KINGDOM
331823
Match the columns I and II Column I Column II A Trimerous flowers P Dicotyledons B Reticulate venation Q Cereals C One polar nuclei R Haploid
1 A – R, B – P, C – Q,
2 A – Q, B – R, C – P,
3 A – P, B – R, C – Q,
4 A – Q, B – P, C – R
Explanation:
A.Trimerous flowers - Q. Cereals B. Reticulate venation - P. Dicotyledons C. One polar nuclei - R. Haploid
BIOXI03: PLANT KINGDOM
331824
In flowering plants, meiosis occurs at the time of
1 Formation of female spores
2 Formation of pollen grains
3 Formation of root primordia
4 Both 1 and 2
Explanation:
Megaspore mother cell undergoes meiosis to form 4 haploid megaspores, out of which 3 degenerate. The last functional megaspore develops into embryo sac. Microspore mother cell undergoes meiosis to form 4 microspores or pollen grains. Each microspore forms 2 male gametes.
BIOXI03: PLANT KINGDOM
331825
The embryo sac of an angiosperm is made up of
1 8 cells
2 7 cells and 8 nuclei
3 8 nuclei
4 7 cells and 7 nuclei
Explanation:
The seven cells are; one egg cell, two synergids, three antipodal cells and one secondary nucleus. The secondary nucleus contains two nuclei; while the other cells contain one nucleus each.
331823
Match the columns I and II Column I Column II A Trimerous flowers P Dicotyledons B Reticulate venation Q Cereals C One polar nuclei R Haploid
1 A – R, B – P, C – Q,
2 A – Q, B – R, C – P,
3 A – P, B – R, C – Q,
4 A – Q, B – P, C – R
Explanation:
A.Trimerous flowers - Q. Cereals B. Reticulate venation - P. Dicotyledons C. One polar nuclei - R. Haploid
BIOXI03: PLANT KINGDOM
331824
In flowering plants, meiosis occurs at the time of
1 Formation of female spores
2 Formation of pollen grains
3 Formation of root primordia
4 Both 1 and 2
Explanation:
Megaspore mother cell undergoes meiosis to form 4 haploid megaspores, out of which 3 degenerate. The last functional megaspore develops into embryo sac. Microspore mother cell undergoes meiosis to form 4 microspores or pollen grains. Each microspore forms 2 male gametes.
BIOXI03: PLANT KINGDOM
331825
The embryo sac of an angiosperm is made up of
1 8 cells
2 7 cells and 8 nuclei
3 8 nuclei
4 7 cells and 7 nuclei
Explanation:
The seven cells are; one egg cell, two synergids, three antipodal cells and one secondary nucleus. The secondary nucleus contains two nuclei; while the other cells contain one nucleus each.
331823
Match the columns I and II Column I Column II A Trimerous flowers P Dicotyledons B Reticulate venation Q Cereals C One polar nuclei R Haploid
1 A – R, B – P, C – Q,
2 A – Q, B – R, C – P,
3 A – P, B – R, C – Q,
4 A – Q, B – P, C – R
Explanation:
A.Trimerous flowers - Q. Cereals B. Reticulate venation - P. Dicotyledons C. One polar nuclei - R. Haploid
BIOXI03: PLANT KINGDOM
331824
In flowering plants, meiosis occurs at the time of
1 Formation of female spores
2 Formation of pollen grains
3 Formation of root primordia
4 Both 1 and 2
Explanation:
Megaspore mother cell undergoes meiosis to form 4 haploid megaspores, out of which 3 degenerate. The last functional megaspore develops into embryo sac. Microspore mother cell undergoes meiosis to form 4 microspores or pollen grains. Each microspore forms 2 male gametes.
BIOXI03: PLANT KINGDOM
331825
The embryo sac of an angiosperm is made up of
1 8 cells
2 7 cells and 8 nuclei
3 8 nuclei
4 7 cells and 7 nuclei
Explanation:
The seven cells are; one egg cell, two synergids, three antipodal cells and one secondary nucleus. The secondary nucleus contains two nuclei; while the other cells contain one nucleus each.
