259611
Assertion (A) : Fertilization in Cycas is called zooidogamy. Reason (R) : Fertilization in Cycas takes place by the formation of pollen tube. The correct answer is:
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true but (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Zooidogamy is a type of plant reproduction in which male gametes (antherozoids) swim in a path of water to the female gametes (archgonium). - Siphonogamy is a condition in plant in which pollen tubes are developed for the transfer of male cells to the eggs. Siphonogamy is formation of pollen tube. Hence, both statment are correct but ( $R$ ( is the not correct explanation of (A).
AP EAMCET-2004
Plant kingdom
259510
Gymnosperms lack which of the following ?
1 Sieve tubes
2 Tracheids
3 Sieve cells
4 Albuminous cells
Explanation:
Seive tubes are specialized cells that helps the phloem, a highly organized tissue that transports organic molecules produced during photosynthesis. - In the gymnosperms, having not seive tubes or companion cells.
AP EAMCET-25.09.2020 Shift-II
Plant kingdom
259492
Which of the following is not the feature of gymnosperms?
1 Parallel venation
2 Perennial plants
3 Distinct branches (long and short branches)
4 Xylem with vessels
Explanation:
Most of the gymnosperms are tall, evergreen trees, none of them are herbs. Gymnosperms are characterized by parallel venation with almost no branching veins wherein secondary veins run parallel to each other. They are vascular plants \& have xylem and phloem for transport of water \& food respectively. The xylem tissue of gymnosperms consists of tracheids only, vessels are absent. - Parallel venation is a vein configuration in which the veins run parallel to one another. Mostly found in monocot leaves. - A perennial plant is a plant that lives more than two years.
JIPMER-2009 / UP CPMT-2012
Plant kingdom
259525
In Pinus/gymnosperms, the haploid structure are
1 megaspore, endosperm and embryo
2 megaspore, pollen grain and endosperm
3 megaspore, integument and root
4 pollen grain, leaf and root
Explanation:
Endosperms is produced before fertilization and hence it is haploid. The structure that are haploid in pinus are megaspore pollen grain and endosperm. Plant Kingdom 218
NEET Test Series from KOTA - 10 Papers In MS WORD
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Plant kingdom
259611
Assertion (A) : Fertilization in Cycas is called zooidogamy. Reason (R) : Fertilization in Cycas takes place by the formation of pollen tube. The correct answer is:
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true but (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Zooidogamy is a type of plant reproduction in which male gametes (antherozoids) swim in a path of water to the female gametes (archgonium). - Siphonogamy is a condition in plant in which pollen tubes are developed for the transfer of male cells to the eggs. Siphonogamy is formation of pollen tube. Hence, both statment are correct but ( $R$ ( is the not correct explanation of (A).
AP EAMCET-2004
Plant kingdom
259510
Gymnosperms lack which of the following ?
1 Sieve tubes
2 Tracheids
3 Sieve cells
4 Albuminous cells
Explanation:
Seive tubes are specialized cells that helps the phloem, a highly organized tissue that transports organic molecules produced during photosynthesis. - In the gymnosperms, having not seive tubes or companion cells.
AP EAMCET-25.09.2020 Shift-II
Plant kingdom
259492
Which of the following is not the feature of gymnosperms?
1 Parallel venation
2 Perennial plants
3 Distinct branches (long and short branches)
4 Xylem with vessels
Explanation:
Most of the gymnosperms are tall, evergreen trees, none of them are herbs. Gymnosperms are characterized by parallel venation with almost no branching veins wherein secondary veins run parallel to each other. They are vascular plants \& have xylem and phloem for transport of water \& food respectively. The xylem tissue of gymnosperms consists of tracheids only, vessels are absent. - Parallel venation is a vein configuration in which the veins run parallel to one another. Mostly found in monocot leaves. - A perennial plant is a plant that lives more than two years.
JIPMER-2009 / UP CPMT-2012
Plant kingdom
259525
In Pinus/gymnosperms, the haploid structure are
1 megaspore, endosperm and embryo
2 megaspore, pollen grain and endosperm
3 megaspore, integument and root
4 pollen grain, leaf and root
Explanation:
Endosperms is produced before fertilization and hence it is haploid. The structure that are haploid in pinus are megaspore pollen grain and endosperm. Plant Kingdom 218
259611
Assertion (A) : Fertilization in Cycas is called zooidogamy. Reason (R) : Fertilization in Cycas takes place by the formation of pollen tube. The correct answer is:
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true but (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Zooidogamy is a type of plant reproduction in which male gametes (antherozoids) swim in a path of water to the female gametes (archgonium). - Siphonogamy is a condition in plant in which pollen tubes are developed for the transfer of male cells to the eggs. Siphonogamy is formation of pollen tube. Hence, both statment are correct but ( $R$ ( is the not correct explanation of (A).
AP EAMCET-2004
Plant kingdom
259510
Gymnosperms lack which of the following ?
1 Sieve tubes
2 Tracheids
3 Sieve cells
4 Albuminous cells
Explanation:
Seive tubes are specialized cells that helps the phloem, a highly organized tissue that transports organic molecules produced during photosynthesis. - In the gymnosperms, having not seive tubes or companion cells.
AP EAMCET-25.09.2020 Shift-II
Plant kingdom
259492
Which of the following is not the feature of gymnosperms?
1 Parallel venation
2 Perennial plants
3 Distinct branches (long and short branches)
4 Xylem with vessels
Explanation:
Most of the gymnosperms are tall, evergreen trees, none of them are herbs. Gymnosperms are characterized by parallel venation with almost no branching veins wherein secondary veins run parallel to each other. They are vascular plants \& have xylem and phloem for transport of water \& food respectively. The xylem tissue of gymnosperms consists of tracheids only, vessels are absent. - Parallel venation is a vein configuration in which the veins run parallel to one another. Mostly found in monocot leaves. - A perennial plant is a plant that lives more than two years.
JIPMER-2009 / UP CPMT-2012
Plant kingdom
259525
In Pinus/gymnosperms, the haploid structure are
1 megaspore, endosperm and embryo
2 megaspore, pollen grain and endosperm
3 megaspore, integument and root
4 pollen grain, leaf and root
Explanation:
Endosperms is produced before fertilization and hence it is haploid. The structure that are haploid in pinus are megaspore pollen grain and endosperm. Plant Kingdom 218
259611
Assertion (A) : Fertilization in Cycas is called zooidogamy. Reason (R) : Fertilization in Cycas takes place by the formation of pollen tube. The correct answer is:
1 Both (A) and (R) are true and (R) is the correct explanation of $(\mathrm{A})$
2 Both (A) and (R) are true but (R) is not the correct explanation of $(\mathrm{A})$
3 (A) is true but (R) is false
4 (A) is false but (R) is true
Explanation:
Zooidogamy is a type of plant reproduction in which male gametes (antherozoids) swim in a path of water to the female gametes (archgonium). - Siphonogamy is a condition in plant in which pollen tubes are developed for the transfer of male cells to the eggs. Siphonogamy is formation of pollen tube. Hence, both statment are correct but ( $R$ ( is the not correct explanation of (A).
AP EAMCET-2004
Plant kingdom
259510
Gymnosperms lack which of the following ?
1 Sieve tubes
2 Tracheids
3 Sieve cells
4 Albuminous cells
Explanation:
Seive tubes are specialized cells that helps the phloem, a highly organized tissue that transports organic molecules produced during photosynthesis. - In the gymnosperms, having not seive tubes or companion cells.
AP EAMCET-25.09.2020 Shift-II
Plant kingdom
259492
Which of the following is not the feature of gymnosperms?
1 Parallel venation
2 Perennial plants
3 Distinct branches (long and short branches)
4 Xylem with vessels
Explanation:
Most of the gymnosperms are tall, evergreen trees, none of them are herbs. Gymnosperms are characterized by parallel venation with almost no branching veins wherein secondary veins run parallel to each other. They are vascular plants \& have xylem and phloem for transport of water \& food respectively. The xylem tissue of gymnosperms consists of tracheids only, vessels are absent. - Parallel venation is a vein configuration in which the veins run parallel to one another. Mostly found in monocot leaves. - A perennial plant is a plant that lives more than two years.
JIPMER-2009 / UP CPMT-2012
Plant kingdom
259525
In Pinus/gymnosperms, the haploid structure are
1 megaspore, endosperm and embryo
2 megaspore, pollen grain and endosperm
3 megaspore, integument and root
4 pollen grain, leaf and root
Explanation:
Endosperms is produced before fertilization and hence it is haploid. The structure that are haploid in pinus are megaspore pollen grain and endosperm. Plant Kingdom 218