341945
If there are 4 cells (PMC) in anthers, what will be the number of pollen grains?
1 4
2 8
3 12
4 16
Explanation:
Microspores or pollen grains develop inside the anther, that is the fertile part of stamen or microsporophyll. The primary sporogenous cell produces microspore mother cells or pollen mother cells (MMC or PMC), inside the anther. On reduction division, every MMC produces 4 pollens or microspores. Accordingly, these four cells will produce 4 x 4 = 16 pollen grains.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341946
Pollen allergy is caused by pollens of
1 Rose
2 Clematis
3 Parthenium
4 Sunflower
Explanation:
Pollen allergy occurs due to pollen of Parthenium , Amaranthus chenopodium etc.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341947
One of the most resistant known biological material is.
1 Lignin
2 Hemicellulose
3 Sporopollenin
4 Lignocellulose
Explanation:
Sporopollenin is the tough resistant biopolymer that coats the outer walls of pollen grains spores and related micro-organisms. It is considered "the most resistant organic material known" and accounts for the morphology and microstructure and for geological preservation of polymorphs (an organic microfossils).
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341948
Pollen grains develop from
1 Sporogenous tissue
2 Epidermis
3 Endothecium
4 Tapetum
Explanation:
The microsporangia develops to form pollen sacs. When the anther is young, sporogenous tissue (a group of compactly arranged homogenous cells) captures the central position of each microsporangium. Cells of the sporogenous tissue further gives rise to microspore tetrad.
341945
If there are 4 cells (PMC) in anthers, what will be the number of pollen grains?
1 4
2 8
3 12
4 16
Explanation:
Microspores or pollen grains develop inside the anther, that is the fertile part of stamen or microsporophyll. The primary sporogenous cell produces microspore mother cells or pollen mother cells (MMC or PMC), inside the anther. On reduction division, every MMC produces 4 pollens or microspores. Accordingly, these four cells will produce 4 x 4 = 16 pollen grains.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341946
Pollen allergy is caused by pollens of
1 Rose
2 Clematis
3 Parthenium
4 Sunflower
Explanation:
Pollen allergy occurs due to pollen of Parthenium , Amaranthus chenopodium etc.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341947
One of the most resistant known biological material is.
1 Lignin
2 Hemicellulose
3 Sporopollenin
4 Lignocellulose
Explanation:
Sporopollenin is the tough resistant biopolymer that coats the outer walls of pollen grains spores and related micro-organisms. It is considered "the most resistant organic material known" and accounts for the morphology and microstructure and for geological preservation of polymorphs (an organic microfossils).
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341948
Pollen grains develop from
1 Sporogenous tissue
2 Epidermis
3 Endothecium
4 Tapetum
Explanation:
The microsporangia develops to form pollen sacs. When the anther is young, sporogenous tissue (a group of compactly arranged homogenous cells) captures the central position of each microsporangium. Cells of the sporogenous tissue further gives rise to microspore tetrad.
341945
If there are 4 cells (PMC) in anthers, what will be the number of pollen grains?
1 4
2 8
3 12
4 16
Explanation:
Microspores or pollen grains develop inside the anther, that is the fertile part of stamen or microsporophyll. The primary sporogenous cell produces microspore mother cells or pollen mother cells (MMC or PMC), inside the anther. On reduction division, every MMC produces 4 pollens or microspores. Accordingly, these four cells will produce 4 x 4 = 16 pollen grains.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341946
Pollen allergy is caused by pollens of
1 Rose
2 Clematis
3 Parthenium
4 Sunflower
Explanation:
Pollen allergy occurs due to pollen of Parthenium , Amaranthus chenopodium etc.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341947
One of the most resistant known biological material is.
1 Lignin
2 Hemicellulose
3 Sporopollenin
4 Lignocellulose
Explanation:
Sporopollenin is the tough resistant biopolymer that coats the outer walls of pollen grains spores and related micro-organisms. It is considered "the most resistant organic material known" and accounts for the morphology and microstructure and for geological preservation of polymorphs (an organic microfossils).
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341948
Pollen grains develop from
1 Sporogenous tissue
2 Epidermis
3 Endothecium
4 Tapetum
Explanation:
The microsporangia develops to form pollen sacs. When the anther is young, sporogenous tissue (a group of compactly arranged homogenous cells) captures the central position of each microsporangium. Cells of the sporogenous tissue further gives rise to microspore tetrad.
341945
If there are 4 cells (PMC) in anthers, what will be the number of pollen grains?
1 4
2 8
3 12
4 16
Explanation:
Microspores or pollen grains develop inside the anther, that is the fertile part of stamen or microsporophyll. The primary sporogenous cell produces microspore mother cells or pollen mother cells (MMC or PMC), inside the anther. On reduction division, every MMC produces 4 pollens or microspores. Accordingly, these four cells will produce 4 x 4 = 16 pollen grains.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341946
Pollen allergy is caused by pollens of
1 Rose
2 Clematis
3 Parthenium
4 Sunflower
Explanation:
Pollen allergy occurs due to pollen of Parthenium , Amaranthus chenopodium etc.
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341947
One of the most resistant known biological material is.
1 Lignin
2 Hemicellulose
3 Sporopollenin
4 Lignocellulose
Explanation:
Sporopollenin is the tough resistant biopolymer that coats the outer walls of pollen grains spores and related micro-organisms. It is considered "the most resistant organic material known" and accounts for the morphology and microstructure and for geological preservation of polymorphs (an organic microfossils).
BIOXII02: SEXUAL REPRODUCTION IN FLOWERING PLANTS
341948
Pollen grains develop from
1 Sporogenous tissue
2 Epidermis
3 Endothecium
4 Tapetum
Explanation:
The microsporangia develops to form pollen sacs. When the anther is young, sporogenous tissue (a group of compactly arranged homogenous cells) captures the central position of each microsporangium. Cells of the sporogenous tissue further gives rise to microspore tetrad.
