259595
In Cycas male gametes are produced in the pollen tube by division of:
1 body cell
2 stalk cell
3 prothallial cell
4 tube cell
Explanation:
Cycas is a Gymnosperm plant. So, in Cycas male gamete is produced in the pollen tube by division of body cell. Male gametes of Cycas are the largest in plant kingdom. These are ciliated top shaped structures.
BHU PMT-2001
Plant kingdom
259605
A mature pollen grain of Pinus has
1 2 cells
2 3 cells
3 4 cells
4 5 cells
Explanation:
In pinus, the micropore core separates by a periclinal wall and structure a tiny prothallial cell and large central cell. the central cell removes a second prothallial cell and antheridial cell. The core of the antheridial cell partitions to frame generative cell and tube cell. Thus, die pollen grain of Pinus is shed at four cell stage when it consists of two vegetative prothallial cells, a generative cell and a tube cell.
Uttarakhand PMT-2009
Plant kingdom
259608
What is the similarity between gymnosperms and angiosperms ?
1 Phloem of both have companian cells
2 Endosperm is formed before fertilization in both
3 Origin of ovule and seed in similar in both
4 Both have leaves, stem and roots
Explanation:
The presence of stem, leaves, and roots is found in both angiosperm and gymnosperm. - Angiosperm and gymnosperms both utilize seeds as the primary means of reproduction and both use pollen to facilitate fertilization. - Gymnosperms and Angiosperms have a life cycle that involves the alternation of generation. - It's both have a reduced gametophyte stage. Angiosperms like all vascular plant have a sporophytic-dominant life cycle, Gymnosperms also have sporophyte dominant life cycle as in other vascular plants .
CG PMT-2007
Plant kingdom
259610
The terminal sterile portion of an organ, considered to be an equivalent of angiospermous stamen in Cycas, is known as:
1 columella
2 hapteron
3 paraphysis
4 apophysis
Explanation:
The sterile part of cycas is apophysis. The microsporophyll of cycas is wedge shaped dorsoventrally flattened structure with basal sterile, middle fertile and apical sterile regions. - The terminal expanded sterile tapering portion is called as apophysis. - Microsporophyll of cycas is equivalent to stamen of angiosperm. It bears a terminal sterile portion, known as apophysis.
259595
In Cycas male gametes are produced in the pollen tube by division of:
1 body cell
2 stalk cell
3 prothallial cell
4 tube cell
Explanation:
Cycas is a Gymnosperm plant. So, in Cycas male gamete is produced in the pollen tube by division of body cell. Male gametes of Cycas are the largest in plant kingdom. These are ciliated top shaped structures.
BHU PMT-2001
Plant kingdom
259605
A mature pollen grain of Pinus has
1 2 cells
2 3 cells
3 4 cells
4 5 cells
Explanation:
In pinus, the micropore core separates by a periclinal wall and structure a tiny prothallial cell and large central cell. the central cell removes a second prothallial cell and antheridial cell. The core of the antheridial cell partitions to frame generative cell and tube cell. Thus, die pollen grain of Pinus is shed at four cell stage when it consists of two vegetative prothallial cells, a generative cell and a tube cell.
Uttarakhand PMT-2009
Plant kingdom
259608
What is the similarity between gymnosperms and angiosperms ?
1 Phloem of both have companian cells
2 Endosperm is formed before fertilization in both
3 Origin of ovule and seed in similar in both
4 Both have leaves, stem and roots
Explanation:
The presence of stem, leaves, and roots is found in both angiosperm and gymnosperm. - Angiosperm and gymnosperms both utilize seeds as the primary means of reproduction and both use pollen to facilitate fertilization. - Gymnosperms and Angiosperms have a life cycle that involves the alternation of generation. - It's both have a reduced gametophyte stage. Angiosperms like all vascular plant have a sporophytic-dominant life cycle, Gymnosperms also have sporophyte dominant life cycle as in other vascular plants .
CG PMT-2007
Plant kingdom
259610
The terminal sterile portion of an organ, considered to be an equivalent of angiospermous stamen in Cycas, is known as:
1 columella
2 hapteron
3 paraphysis
4 apophysis
Explanation:
The sterile part of cycas is apophysis. The microsporophyll of cycas is wedge shaped dorsoventrally flattened structure with basal sterile, middle fertile and apical sterile regions. - The terminal expanded sterile tapering portion is called as apophysis. - Microsporophyll of cycas is equivalent to stamen of angiosperm. It bears a terminal sterile portion, known as apophysis.
259595
In Cycas male gametes are produced in the pollen tube by division of:
1 body cell
2 stalk cell
3 prothallial cell
4 tube cell
Explanation:
Cycas is a Gymnosperm plant. So, in Cycas male gamete is produced in the pollen tube by division of body cell. Male gametes of Cycas are the largest in plant kingdom. These are ciliated top shaped structures.
BHU PMT-2001
Plant kingdom
259605
A mature pollen grain of Pinus has
1 2 cells
2 3 cells
3 4 cells
4 5 cells
Explanation:
In pinus, the micropore core separates by a periclinal wall and structure a tiny prothallial cell and large central cell. the central cell removes a second prothallial cell and antheridial cell. The core of the antheridial cell partitions to frame generative cell and tube cell. Thus, die pollen grain of Pinus is shed at four cell stage when it consists of two vegetative prothallial cells, a generative cell and a tube cell.
Uttarakhand PMT-2009
Plant kingdom
259608
What is the similarity between gymnosperms and angiosperms ?
1 Phloem of both have companian cells
2 Endosperm is formed before fertilization in both
3 Origin of ovule and seed in similar in both
4 Both have leaves, stem and roots
Explanation:
The presence of stem, leaves, and roots is found in both angiosperm and gymnosperm. - Angiosperm and gymnosperms both utilize seeds as the primary means of reproduction and both use pollen to facilitate fertilization. - Gymnosperms and Angiosperms have a life cycle that involves the alternation of generation. - It's both have a reduced gametophyte stage. Angiosperms like all vascular plant have a sporophytic-dominant life cycle, Gymnosperms also have sporophyte dominant life cycle as in other vascular plants .
CG PMT-2007
Plant kingdom
259610
The terminal sterile portion of an organ, considered to be an equivalent of angiospermous stamen in Cycas, is known as:
1 columella
2 hapteron
3 paraphysis
4 apophysis
Explanation:
The sterile part of cycas is apophysis. The microsporophyll of cycas is wedge shaped dorsoventrally flattened structure with basal sterile, middle fertile and apical sterile regions. - The terminal expanded sterile tapering portion is called as apophysis. - Microsporophyll of cycas is equivalent to stamen of angiosperm. It bears a terminal sterile portion, known as apophysis.
259595
In Cycas male gametes are produced in the pollen tube by division of:
1 body cell
2 stalk cell
3 prothallial cell
4 tube cell
Explanation:
Cycas is a Gymnosperm plant. So, in Cycas male gamete is produced in the pollen tube by division of body cell. Male gametes of Cycas are the largest in plant kingdom. These are ciliated top shaped structures.
BHU PMT-2001
Plant kingdom
259605
A mature pollen grain of Pinus has
1 2 cells
2 3 cells
3 4 cells
4 5 cells
Explanation:
In pinus, the micropore core separates by a periclinal wall and structure a tiny prothallial cell and large central cell. the central cell removes a second prothallial cell and antheridial cell. The core of the antheridial cell partitions to frame generative cell and tube cell. Thus, die pollen grain of Pinus is shed at four cell stage when it consists of two vegetative prothallial cells, a generative cell and a tube cell.
Uttarakhand PMT-2009
Plant kingdom
259608
What is the similarity between gymnosperms and angiosperms ?
1 Phloem of both have companian cells
2 Endosperm is formed before fertilization in both
3 Origin of ovule and seed in similar in both
4 Both have leaves, stem and roots
Explanation:
The presence of stem, leaves, and roots is found in both angiosperm and gymnosperm. - Angiosperm and gymnosperms both utilize seeds as the primary means of reproduction and both use pollen to facilitate fertilization. - Gymnosperms and Angiosperms have a life cycle that involves the alternation of generation. - It's both have a reduced gametophyte stage. Angiosperms like all vascular plant have a sporophytic-dominant life cycle, Gymnosperms also have sporophyte dominant life cycle as in other vascular plants .
CG PMT-2007
Plant kingdom
259610
The terminal sterile portion of an organ, considered to be an equivalent of angiospermous stamen in Cycas, is known as:
1 columella
2 hapteron
3 paraphysis
4 apophysis
Explanation:
The sterile part of cycas is apophysis. The microsporophyll of cycas is wedge shaped dorsoventrally flattened structure with basal sterile, middle fertile and apical sterile regions. - The terminal expanded sterile tapering portion is called as apophysis. - Microsporophyll of cycas is equivalent to stamen of angiosperm. It bears a terminal sterile portion, known as apophysis.
