262646
Ovule is inverted with body fused to funicle, micropyle lying close to hilum and facing the placenta, it is
1 hemitropous
2 orthon-opous
3 anatropous
4 campylotropous
Explanation:
Ovule is inverted with body fused to funicle micropyle lying lose to hilum and facing the placenta, it is anatroprous ovule. In hemitropous ovule, micropyle and chalaza lie in a straight line but funiculus is at right angle with both these two. Orthotropous ovule is the simplest and primitive type, in which micropyle, chalaza and funicules lie in one vertical plane. In campylotropous ovule, Micropyle and funicle lie at the same pole near each other.
BVP-2010 / JCECE-2005 / Manipal-2000
Sexual Reproduction in Flowering Plants
262653
Amphitropous (transversal) ovules are found in
1 1,2 and 3 are correct
2 1 and 2 are correct
3 2 and 4 are correct
4 1 and 3 are correct
Explanation:
Amphitropous [transversal] ovules get curved with embryo sac in such a way that it becomes horse shoe-shaped. Ex.- Lemma, Poppy, Ranunculus etc. In opuntia circinotropous ovule is found. In this type of ovule funiculus becomes long and covers the whole ovule.
BHU PMT (Mains)-2011
Sexual Reproduction in Flowering Plants
262661
Consider the following statements and choose the correct option
1 A and C are correct
2 A and D are correct
3 B and D are correct
4 B and C are correct
5 C and D are correct
Explanation:
Ovule is also called megasporangium and is protected by one two covering called integuments. A mature ovule consists of a stalk and a body. The stalk or the funiculus (also called funicle) is present at the base and if attaches the ovule of the placenta. The point of attachment of funicle to the body the ovule is known as hilum. The small opening is the tip of ovule is called micropyle. It allows pollen tube to enter.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262662
Which one of the following is the most common type of embryo sac ?
1 Allium type
2 Oenothera type
3 Polygonum type
4 Adoxa type
Explanation:
Polygonum type embryo sac is the most common type of embryo sac found in plant, which is 8 nucleate, 7 celled ( 3 -antipodal cells +2 synergids +1 egg cell +1 central cell) It is monosporic embryo sac. This type of embryo sac develop from a single megaspore. - In Allium type of embryo sac, two megaspore takes part in embryo sac formation. So, it is called as bisporic embryo sac. - Oenothera is monosporic- 4 nucleated embryo sac and develops from the micropylar megaspore. Adoxa type of embryo sac is tetra sporic embryo sac in which all four megaspore takes part in embryo sac formation.
262646
Ovule is inverted with body fused to funicle, micropyle lying close to hilum and facing the placenta, it is
1 hemitropous
2 orthon-opous
3 anatropous
4 campylotropous
Explanation:
Ovule is inverted with body fused to funicle micropyle lying lose to hilum and facing the placenta, it is anatroprous ovule. In hemitropous ovule, micropyle and chalaza lie in a straight line but funiculus is at right angle with both these two. Orthotropous ovule is the simplest and primitive type, in which micropyle, chalaza and funicules lie in one vertical plane. In campylotropous ovule, Micropyle and funicle lie at the same pole near each other.
BVP-2010 / JCECE-2005 / Manipal-2000
Sexual Reproduction in Flowering Plants
262653
Amphitropous (transversal) ovules are found in
1 1,2 and 3 are correct
2 1 and 2 are correct
3 2 and 4 are correct
4 1 and 3 are correct
Explanation:
Amphitropous [transversal] ovules get curved with embryo sac in such a way that it becomes horse shoe-shaped. Ex.- Lemma, Poppy, Ranunculus etc. In opuntia circinotropous ovule is found. In this type of ovule funiculus becomes long and covers the whole ovule.
BHU PMT (Mains)-2011
Sexual Reproduction in Flowering Plants
262661
Consider the following statements and choose the correct option
1 A and C are correct
2 A and D are correct
3 B and D are correct
4 B and C are correct
5 C and D are correct
Explanation:
Ovule is also called megasporangium and is protected by one two covering called integuments. A mature ovule consists of a stalk and a body. The stalk or the funiculus (also called funicle) is present at the base and if attaches the ovule of the placenta. The point of attachment of funicle to the body the ovule is known as hilum. The small opening is the tip of ovule is called micropyle. It allows pollen tube to enter.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262662
Which one of the following is the most common type of embryo sac ?
1 Allium type
2 Oenothera type
3 Polygonum type
4 Adoxa type
Explanation:
Polygonum type embryo sac is the most common type of embryo sac found in plant, which is 8 nucleate, 7 celled ( 3 -antipodal cells +2 synergids +1 egg cell +1 central cell) It is monosporic embryo sac. This type of embryo sac develop from a single megaspore. - In Allium type of embryo sac, two megaspore takes part in embryo sac formation. So, it is called as bisporic embryo sac. - Oenothera is monosporic- 4 nucleated embryo sac and develops from the micropylar megaspore. Adoxa type of embryo sac is tetra sporic embryo sac in which all four megaspore takes part in embryo sac formation.
262646
Ovule is inverted with body fused to funicle, micropyle lying close to hilum and facing the placenta, it is
1 hemitropous
2 orthon-opous
3 anatropous
4 campylotropous
Explanation:
Ovule is inverted with body fused to funicle micropyle lying lose to hilum and facing the placenta, it is anatroprous ovule. In hemitropous ovule, micropyle and chalaza lie in a straight line but funiculus is at right angle with both these two. Orthotropous ovule is the simplest and primitive type, in which micropyle, chalaza and funicules lie in one vertical plane. In campylotropous ovule, Micropyle and funicle lie at the same pole near each other.
BVP-2010 / JCECE-2005 / Manipal-2000
Sexual Reproduction in Flowering Plants
262653
Amphitropous (transversal) ovules are found in
1 1,2 and 3 are correct
2 1 and 2 are correct
3 2 and 4 are correct
4 1 and 3 are correct
Explanation:
Amphitropous [transversal] ovules get curved with embryo sac in such a way that it becomes horse shoe-shaped. Ex.- Lemma, Poppy, Ranunculus etc. In opuntia circinotropous ovule is found. In this type of ovule funiculus becomes long and covers the whole ovule.
BHU PMT (Mains)-2011
Sexual Reproduction in Flowering Plants
262661
Consider the following statements and choose the correct option
1 A and C are correct
2 A and D are correct
3 B and D are correct
4 B and C are correct
5 C and D are correct
Explanation:
Ovule is also called megasporangium and is protected by one two covering called integuments. A mature ovule consists of a stalk and a body. The stalk or the funiculus (also called funicle) is present at the base and if attaches the ovule of the placenta. The point of attachment of funicle to the body the ovule is known as hilum. The small opening is the tip of ovule is called micropyle. It allows pollen tube to enter.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262662
Which one of the following is the most common type of embryo sac ?
1 Allium type
2 Oenothera type
3 Polygonum type
4 Adoxa type
Explanation:
Polygonum type embryo sac is the most common type of embryo sac found in plant, which is 8 nucleate, 7 celled ( 3 -antipodal cells +2 synergids +1 egg cell +1 central cell) It is monosporic embryo sac. This type of embryo sac develop from a single megaspore. - In Allium type of embryo sac, two megaspore takes part in embryo sac formation. So, it is called as bisporic embryo sac. - Oenothera is monosporic- 4 nucleated embryo sac and develops from the micropylar megaspore. Adoxa type of embryo sac is tetra sporic embryo sac in which all four megaspore takes part in embryo sac formation.
262646
Ovule is inverted with body fused to funicle, micropyle lying close to hilum and facing the placenta, it is
1 hemitropous
2 orthon-opous
3 anatropous
4 campylotropous
Explanation:
Ovule is inverted with body fused to funicle micropyle lying lose to hilum and facing the placenta, it is anatroprous ovule. In hemitropous ovule, micropyle and chalaza lie in a straight line but funiculus is at right angle with both these two. Orthotropous ovule is the simplest and primitive type, in which micropyle, chalaza and funicules lie in one vertical plane. In campylotropous ovule, Micropyle and funicle lie at the same pole near each other.
BVP-2010 / JCECE-2005 / Manipal-2000
Sexual Reproduction in Flowering Plants
262653
Amphitropous (transversal) ovules are found in
1 1,2 and 3 are correct
2 1 and 2 are correct
3 2 and 4 are correct
4 1 and 3 are correct
Explanation:
Amphitropous [transversal] ovules get curved with embryo sac in such a way that it becomes horse shoe-shaped. Ex.- Lemma, Poppy, Ranunculus etc. In opuntia circinotropous ovule is found. In this type of ovule funiculus becomes long and covers the whole ovule.
BHU PMT (Mains)-2011
Sexual Reproduction in Flowering Plants
262661
Consider the following statements and choose the correct option
1 A and C are correct
2 A and D are correct
3 B and D are correct
4 B and C are correct
5 C and D are correct
Explanation:
Ovule is also called megasporangium and is protected by one two covering called integuments. A mature ovule consists of a stalk and a body. The stalk or the funiculus (also called funicle) is present at the base and if attaches the ovule of the placenta. The point of attachment of funicle to the body the ovule is known as hilum. The small opening is the tip of ovule is called micropyle. It allows pollen tube to enter.
Kerala PMT-2015
Sexual Reproduction in Flowering Plants
262662
Which one of the following is the most common type of embryo sac ?
1 Allium type
2 Oenothera type
3 Polygonum type
4 Adoxa type
Explanation:
Polygonum type embryo sac is the most common type of embryo sac found in plant, which is 8 nucleate, 7 celled ( 3 -antipodal cells +2 synergids +1 egg cell +1 central cell) It is monosporic embryo sac. This type of embryo sac develop from a single megaspore. - In Allium type of embryo sac, two megaspore takes part in embryo sac formation. So, it is called as bisporic embryo sac. - Oenothera is monosporic- 4 nucleated embryo sac and develops from the micropylar megaspore. Adoxa type of embryo sac is tetra sporic embryo sac in which all four megaspore takes part in embryo sac formation.
