331800
Assertion : Angiosperms have two classes: Dicotyledonae and Monocotyledonae. Reason : Dicotyledonae are advanced in evolutionary history.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Monocotyledons are rather small group of plants compared to genetically diverse dicotyledons. Monocots have more genes, moved from chloroplast genome with better controlled photosynthesis. Adding \({C_4}\) mechanism, average monocot is better adaptable to diverse and harsh environment comparing to average dicot. Monocots do not show secondary growth yet considered more advanced.
BIOXI03: PLANT KINGDOM
331801
Which of the following is absent in angiospermic plants_ I. Double fertilisation II. Triploid endosperm III. Diploid endosperm IV. Syngamy
1 I and II
2 III and IV
3 II and IV
4 III
Explanation:
Endosperm in angiosperms in triploid due to fusion of secondary nucleus (2n) and male gamete (n).
BIOXI03: PLANT KINGDOM
331802
Functional megaspore in an angiosperm develops into
1 Ovule
2 Endosperm
3 Embryo sac
4 Embryo
Explanation:
Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.
NEET - 2017
BIOXI03: PLANT KINGDOM
331803
Double fertilization is exhibited by
1 Gymnosperms
2 Algae
3 Fungi
4 Angiosperms
Explanation:
Double fertilization is a characteristic feature exhibited by angiosperms. It involves syngamy and triple fusion.
331800
Assertion : Angiosperms have two classes: Dicotyledonae and Monocotyledonae. Reason : Dicotyledonae are advanced in evolutionary history.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Monocotyledons are rather small group of plants compared to genetically diverse dicotyledons. Monocots have more genes, moved from chloroplast genome with better controlled photosynthesis. Adding \({C_4}\) mechanism, average monocot is better adaptable to diverse and harsh environment comparing to average dicot. Monocots do not show secondary growth yet considered more advanced.
BIOXI03: PLANT KINGDOM
331801
Which of the following is absent in angiospermic plants_ I. Double fertilisation II. Triploid endosperm III. Diploid endosperm IV. Syngamy
1 I and II
2 III and IV
3 II and IV
4 III
Explanation:
Endosperm in angiosperms in triploid due to fusion of secondary nucleus (2n) and male gamete (n).
BIOXI03: PLANT KINGDOM
331802
Functional megaspore in an angiosperm develops into
1 Ovule
2 Endosperm
3 Embryo sac
4 Embryo
Explanation:
Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.
NEET - 2017
BIOXI03: PLANT KINGDOM
331803
Double fertilization is exhibited by
1 Gymnosperms
2 Algae
3 Fungi
4 Angiosperms
Explanation:
Double fertilization is a characteristic feature exhibited by angiosperms. It involves syngamy and triple fusion.
331800
Assertion : Angiosperms have two classes: Dicotyledonae and Monocotyledonae. Reason : Dicotyledonae are advanced in evolutionary history.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Monocotyledons are rather small group of plants compared to genetically diverse dicotyledons. Monocots have more genes, moved from chloroplast genome with better controlled photosynthesis. Adding \({C_4}\) mechanism, average monocot is better adaptable to diverse and harsh environment comparing to average dicot. Monocots do not show secondary growth yet considered more advanced.
BIOXI03: PLANT KINGDOM
331801
Which of the following is absent in angiospermic plants_ I. Double fertilisation II. Triploid endosperm III. Diploid endosperm IV. Syngamy
1 I and II
2 III and IV
3 II and IV
4 III
Explanation:
Endosperm in angiosperms in triploid due to fusion of secondary nucleus (2n) and male gamete (n).
BIOXI03: PLANT KINGDOM
331802
Functional megaspore in an angiosperm develops into
1 Ovule
2 Endosperm
3 Embryo sac
4 Embryo
Explanation:
Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.
NEET - 2017
BIOXI03: PLANT KINGDOM
331803
Double fertilization is exhibited by
1 Gymnosperms
2 Algae
3 Fungi
4 Angiosperms
Explanation:
Double fertilization is a characteristic feature exhibited by angiosperms. It involves syngamy and triple fusion.
331800
Assertion : Angiosperms have two classes: Dicotyledonae and Monocotyledonae. Reason : Dicotyledonae are advanced in evolutionary history.
1 Both Assertion and Reason are true and Reason is correct explanation of Assertion.
2 Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
3 Assertion is true but Reason is false.
4 Both Assertion and Reason are false.
Explanation:
Monocotyledons are rather small group of plants compared to genetically diverse dicotyledons. Monocots have more genes, moved from chloroplast genome with better controlled photosynthesis. Adding \({C_4}\) mechanism, average monocot is better adaptable to diverse and harsh environment comparing to average dicot. Monocots do not show secondary growth yet considered more advanced.
BIOXI03: PLANT KINGDOM
331801
Which of the following is absent in angiospermic plants_ I. Double fertilisation II. Triploid endosperm III. Diploid endosperm IV. Syngamy
1 I and II
2 III and IV
3 II and IV
4 III
Explanation:
Endosperm in angiosperms in triploid due to fusion of secondary nucleus (2n) and male gamete (n).
BIOXI03: PLANT KINGDOM
331802
Functional megaspore in an angiosperm develops into
1 Ovule
2 Endosperm
3 Embryo sac
4 Embryo
Explanation:
Megaspore is the first cell of female gametophytic generation in angiosperm. It undergoes three successive generations of free nuclear mitosis to form 8-nucleated and 7-celled embryo sac.
NEET - 2017
BIOXI03: PLANT KINGDOM
331803
Double fertilization is exhibited by
1 Gymnosperms
2 Algae
3 Fungi
4 Angiosperms
Explanation:
Double fertilization is a characteristic feature exhibited by angiosperms. It involves syngamy and triple fusion.
