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Consider the following four statements whether they are correct or wrong? [2011M] (A) The sporophyte in liverworts is more elaborate than that in mosses (B) Salvinia is heterosporous (C) The life cycle in all seed-bearing plants is diplontic (D) In Pinus male and female cones are borne on different trees
- a)Statements (A) and (C)
- b)Statements (A) and (D)
- c)Statements (B) and (C)
- d)Statements (A) and (B)
Correct answer is option 'B'. Can you explain this answer?
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Consider the following four statements whether they are correct or wro...
(A) Sporophyte is more developed in mosses rather than liverwort. (B) Pinus is monoecious in which male & female cones are borne on different branches.
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Consider the following four statements whether they are correct or wro...
Statement (A): The sporophyte in liverworts is more elaborate than that in mosses
This statement is correct. Liverworts and mosses are both bryophytes, which are non-vascular plants. The sporophyte generation in liverworts is indeed more elaborate than that in mosses. In liverworts, the sporophyte is typically elevated on a stalk called a seta and consists of a foot, seta, and capsule. The capsule contains sporogenous tissue that produces spores. In contrast, the sporophyte in mosses is usually shorter and consists of a foot, seta, and capsule as well, but the capsule is often more rudimentary compared to liverworts.
Statement (B): Salvinia is heterosporous
This statement is correct. Salvinia is a type of aquatic fern, and all ferns are heterosporous. Heterospory is a reproductive strategy in plants where two different types of spores are produced: megaspores and microspores. In Salvinia, megaspores develop into female gametophytes, while microspores develop into male gametophytes. This allows for the production of both male and female gametes, increasing the chances of successful fertilization.
Statement (C): The life cycle in all seed-bearing plants is diplontic
This statement is wrong. The life cycle in seed-bearing plants, also known as gymnosperms and angiosperms, is not diplontic but alternates between a diploid sporophyte generation and a haploid gametophyte generation. The sporophyte is the dominant and more elaborate generation, producing spores through meiosis. These spores develop into the gametophyte generation, which produces gametes through mitosis. Fertilization of gametes leads to the formation of a diploid zygote, which develops into a new sporophyte.
Statement (D): In Pinus male and female cones are borne on different trees
This statement is wrong. In Pinus, which belongs to the gymnosperm group, male and female cones are not borne on different trees but on the same tree. However, they are usually found on different branches of the same tree. The male cones, also known as pollen cones, produce and release pollen grains, which contain the male gametes. The female cones, also known as seed cones, contain ovules that house the female gametes. The pollen grains are carried by wind or insects to reach the female cones for fertilization. Therefore, both male and female cones are present on the same Pinus tree.
This statement is correct. Liverworts and mosses are both bryophytes, which are non-vascular plants. The sporophyte generation in liverworts is indeed more elaborate than that in mosses. In liverworts, the sporophyte is typically elevated on a stalk called a seta and consists of a foot, seta, and capsule. The capsule contains sporogenous tissue that produces spores. In contrast, the sporophyte in mosses is usually shorter and consists of a foot, seta, and capsule as well, but the capsule is often more rudimentary compared to liverworts.
Statement (B): Salvinia is heterosporous
This statement is correct. Salvinia is a type of aquatic fern, and all ferns are heterosporous. Heterospory is a reproductive strategy in plants where two different types of spores are produced: megaspores and microspores. In Salvinia, megaspores develop into female gametophytes, while microspores develop into male gametophytes. This allows for the production of both male and female gametes, increasing the chances of successful fertilization.
Statement (C): The life cycle in all seed-bearing plants is diplontic
This statement is wrong. The life cycle in seed-bearing plants, also known as gymnosperms and angiosperms, is not diplontic but alternates between a diploid sporophyte generation and a haploid gametophyte generation. The sporophyte is the dominant and more elaborate generation, producing spores through meiosis. These spores develop into the gametophyte generation, which produces gametes through mitosis. Fertilization of gametes leads to the formation of a diploid zygote, which develops into a new sporophyte.
Statement (D): In Pinus male and female cones are borne on different trees
This statement is wrong. In Pinus, which belongs to the gymnosperm group, male and female cones are not borne on different trees but on the same tree. However, they are usually found on different branches of the same tree. The male cones, also known as pollen cones, produce and release pollen grains, which contain the male gametes. The female cones, also known as seed cones, contain ovules that house the female gametes. The pollen grains are carried by wind or insects to reach the female cones for fertilization. Therefore, both male and female cones are present on the same Pinus tree.
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Consider the following four statements whether they are correct or wro...
On the basis of what they are asking option B is correct when they r expecting wrong statement and option C is right when they r asking true statement
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Consider the following four statements whether they are correct or wrong? [2011M] (A) The sporophyte in liverworts is more elaborate than that in mosses (B) Salvinia is heterosporous (C) The life cycle in all seed-bearing plants is diplontic (D) In Pinus male and female cones are borne on different treesa)Statements (A) and (C)b)Statements (A) and (D)c)Statements (B) and (C)d)Statements (A) and (B)Correct answer is option 'B'. Can you explain this answer?
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Consider the following four statements whether they are correct or wrong? [2011M] (A) The sporophyte in liverworts is more elaborate than that in mosses (B) Salvinia is heterosporous (C) The life cycle in all seed-bearing plants is diplontic (D) In Pinus male and female cones are borne on different treesa)Statements (A) and (C)b)Statements (A) and (D)c)Statements (B) and (C)d)Statements (A) and (B)Correct answer is option 'B'. Can you explain this answer? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about Consider the following four statements whether they are correct or wrong? [2011M] (A) The sporophyte in liverworts is more elaborate than that in mosses (B) Salvinia is heterosporous (C) The life cycle in all seed-bearing plants is diplontic (D) In Pinus male and female cones are borne on different treesa)Statements (A) and (C)b)Statements (A) and (D)c)Statements (B) and (C)d)Statements (A) and (B)Correct answer is option 'B'. Can you explain this answer? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following four statements whether they are correct or wrong? [2011M] (A) The sporophyte in liverworts is more elaborate than that in mosses (B) Salvinia is heterosporous (C) The life cycle in all seed-bearing plants is diplontic (D) In Pinus male and female cones are borne on different treesa)Statements (A) and (C)b)Statements (A) and (D)c)Statements (B) and (C)d)Statements (A) and (B)Correct answer is option 'B'. Can you explain this answer?.
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