62728
Assertion (A) : Dry Dehiscent fruits are usually single seeded. Reason (R) : Tridax fruit is cypsella with pappus like calyx.
1 and are true and 'R' is the correct explanation to ' '
2 and are true ' ' is not the correct explanation to ' '
3 is true but is false
4 A is false but is ture
Explanation:
D Tridax is a flowering plant in the family asteraceae. Pappus like calyx and cypsela is a characterstic fruit of the family asteraceae. It is dry single-secded fruit formed from a double ovary of which only one develops into a seed. A dry dehiscent, one-seeded fruit, similar to those in the Asteraceae family which are produced from two ovaries, only one of which bears seeds.
AP EAPCET-22.05.2023
Morphology of Plants
62729
Assertion (A): There is no variation in size of mature seeds in orchids. Reason (R): Lodecia maldivica is the plant with largest seed.
1 'A' and 'R' are true and 'R' is the correct explanation to 'A'.
2 ' ' and ' ' are true but ' ' is not the correct explanation of 'A'.
3 'A' is true but ' ' is false.
4 'A' is false but ' ' is true.
Explanation:
D Lodoicea maldivica, is a type of palm tree and also known as the double coconut is producing the largest and for heaviest seeds in the world. The weight of seeds is up to and are almost in diameter which makes them the largest and heaviest seeds in the world. Orchid seeds are very small, extremely light and produced in great numbers. The typical orchid seed is merely the size of a speck of dust. Thus, Assertion (A) is false but Reason (R) is true.
AP EAPCET-23.05.2023
Morphology of Plants
62730
Which part of the fruit, labelled in the given figure makes it a false fruit?
1 Seed
2 Mesocarp
3 Endocarp
4 Thalamus
Explanation:
D As thalamus is involved in fruit formation. Therefore, it is a false fruit. False fruit is also known as accessory fruit, spurious fruit, pseudofruit psuedocarp. A false fruit is a fruit in which some of its flesh is derived not from the the floral ovary but from some other tissue located exterior to the carpel i.e. some other reproductive part of the flower. eg- Apple, Pear, Pineapple, Strawberry etc. - Apple is formed from the thalamus and not from the ovary. So it is known as false fruit.
NEET-2022
Morphology of Plants
62737
Persistent nucellus in the seed is known as
1 Perisperm
2 Hilum
3 Tegmen
4 Chalaza
Explanation:
A The residual persistent nucellus in the seed is called perisperm. - Perisperm is the nutritive tissue derived from persistent nucellus that surrounds the embryo of seed in some angiosperm. eg - Black pepper, Beet. - Nucellus is the central cellular mass of the body of ovule, containing the embryo sac. Helium-Helium is scar left by the stalk which attached the ovule to the ovary wall before it become seed.
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Morphology of Plants
62728
Assertion (A) : Dry Dehiscent fruits are usually single seeded. Reason (R) : Tridax fruit is cypsella with pappus like calyx.
1 and are true and 'R' is the correct explanation to ' '
2 and are true ' ' is not the correct explanation to ' '
3 is true but is false
4 A is false but is ture
Explanation:
D Tridax is a flowering plant in the family asteraceae. Pappus like calyx and cypsela is a characterstic fruit of the family asteraceae. It is dry single-secded fruit formed from a double ovary of which only one develops into a seed. A dry dehiscent, one-seeded fruit, similar to those in the Asteraceae family which are produced from two ovaries, only one of which bears seeds.
AP EAPCET-22.05.2023
Morphology of Plants
62729
Assertion (A): There is no variation in size of mature seeds in orchids. Reason (R): Lodecia maldivica is the plant with largest seed.
1 'A' and 'R' are true and 'R' is the correct explanation to 'A'.
2 ' ' and ' ' are true but ' ' is not the correct explanation of 'A'.
3 'A' is true but ' ' is false.
4 'A' is false but ' ' is true.
Explanation:
D Lodoicea maldivica, is a type of palm tree and also known as the double coconut is producing the largest and for heaviest seeds in the world. The weight of seeds is up to and are almost in diameter which makes them the largest and heaviest seeds in the world. Orchid seeds are very small, extremely light and produced in great numbers. The typical orchid seed is merely the size of a speck of dust. Thus, Assertion (A) is false but Reason (R) is true.
AP EAPCET-23.05.2023
Morphology of Plants
62730
Which part of the fruit, labelled in the given figure makes it a false fruit?
1 Seed
2 Mesocarp
3 Endocarp
4 Thalamus
Explanation:
D As thalamus is involved in fruit formation. Therefore, it is a false fruit. False fruit is also known as accessory fruit, spurious fruit, pseudofruit psuedocarp. A false fruit is a fruit in which some of its flesh is derived not from the the floral ovary but from some other tissue located exterior to the carpel i.e. some other reproductive part of the flower. eg- Apple, Pear, Pineapple, Strawberry etc. - Apple is formed from the thalamus and not from the ovary. So it is known as false fruit.
NEET-2022
Morphology of Plants
62737
Persistent nucellus in the seed is known as
1 Perisperm
2 Hilum
3 Tegmen
4 Chalaza
Explanation:
A The residual persistent nucellus in the seed is called perisperm. - Perisperm is the nutritive tissue derived from persistent nucellus that surrounds the embryo of seed in some angiosperm. eg - Black pepper, Beet. - Nucellus is the central cellular mass of the body of ovule, containing the embryo sac. Helium-Helium is scar left by the stalk which attached the ovule to the ovary wall before it become seed.
62728
Assertion (A) : Dry Dehiscent fruits are usually single seeded. Reason (R) : Tridax fruit is cypsella with pappus like calyx.
1 and are true and 'R' is the correct explanation to ' '
2 and are true ' ' is not the correct explanation to ' '
3 is true but is false
4 A is false but is ture
Explanation:
D Tridax is a flowering plant in the family asteraceae. Pappus like calyx and cypsela is a characterstic fruit of the family asteraceae. It is dry single-secded fruit formed from a double ovary of which only one develops into a seed. A dry dehiscent, one-seeded fruit, similar to those in the Asteraceae family which are produced from two ovaries, only one of which bears seeds.
AP EAPCET-22.05.2023
Morphology of Plants
62729
Assertion (A): There is no variation in size of mature seeds in orchids. Reason (R): Lodecia maldivica is the plant with largest seed.
1 'A' and 'R' are true and 'R' is the correct explanation to 'A'.
2 ' ' and ' ' are true but ' ' is not the correct explanation of 'A'.
3 'A' is true but ' ' is false.
4 'A' is false but ' ' is true.
Explanation:
D Lodoicea maldivica, is a type of palm tree and also known as the double coconut is producing the largest and for heaviest seeds in the world. The weight of seeds is up to and are almost in diameter which makes them the largest and heaviest seeds in the world. Orchid seeds are very small, extremely light and produced in great numbers. The typical orchid seed is merely the size of a speck of dust. Thus, Assertion (A) is false but Reason (R) is true.
AP EAPCET-23.05.2023
Morphology of Plants
62730
Which part of the fruit, labelled in the given figure makes it a false fruit?
1 Seed
2 Mesocarp
3 Endocarp
4 Thalamus
Explanation:
D As thalamus is involved in fruit formation. Therefore, it is a false fruit. False fruit is also known as accessory fruit, spurious fruit, pseudofruit psuedocarp. A false fruit is a fruit in which some of its flesh is derived not from the the floral ovary but from some other tissue located exterior to the carpel i.e. some other reproductive part of the flower. eg- Apple, Pear, Pineapple, Strawberry etc. - Apple is formed from the thalamus and not from the ovary. So it is known as false fruit.
NEET-2022
Morphology of Plants
62737
Persistent nucellus in the seed is known as
1 Perisperm
2 Hilum
3 Tegmen
4 Chalaza
Explanation:
A The residual persistent nucellus in the seed is called perisperm. - Perisperm is the nutritive tissue derived from persistent nucellus that surrounds the embryo of seed in some angiosperm. eg - Black pepper, Beet. - Nucellus is the central cellular mass of the body of ovule, containing the embryo sac. Helium-Helium is scar left by the stalk which attached the ovule to the ovary wall before it become seed.
62728
Assertion (A) : Dry Dehiscent fruits are usually single seeded. Reason (R) : Tridax fruit is cypsella with pappus like calyx.
1 and are true and 'R' is the correct explanation to ' '
2 and are true ' ' is not the correct explanation to ' '
3 is true but is false
4 A is false but is ture
Explanation:
D Tridax is a flowering plant in the family asteraceae. Pappus like calyx and cypsela is a characterstic fruit of the family asteraceae. It is dry single-secded fruit formed from a double ovary of which only one develops into a seed. A dry dehiscent, one-seeded fruit, similar to those in the Asteraceae family which are produced from two ovaries, only one of which bears seeds.
AP EAPCET-22.05.2023
Morphology of Plants
62729
Assertion (A): There is no variation in size of mature seeds in orchids. Reason (R): Lodecia maldivica is the plant with largest seed.
1 'A' and 'R' are true and 'R' is the correct explanation to 'A'.
2 ' ' and ' ' are true but ' ' is not the correct explanation of 'A'.
3 'A' is true but ' ' is false.
4 'A' is false but ' ' is true.
Explanation:
D Lodoicea maldivica, is a type of palm tree and also known as the double coconut is producing the largest and for heaviest seeds in the world. The weight of seeds is up to and are almost in diameter which makes them the largest and heaviest seeds in the world. Orchid seeds are very small, extremely light and produced in great numbers. The typical orchid seed is merely the size of a speck of dust. Thus, Assertion (A) is false but Reason (R) is true.
AP EAPCET-23.05.2023
Morphology of Plants
62730
Which part of the fruit, labelled in the given figure makes it a false fruit?
1 Seed
2 Mesocarp
3 Endocarp
4 Thalamus
Explanation:
D As thalamus is involved in fruit formation. Therefore, it is a false fruit. False fruit is also known as accessory fruit, spurious fruit, pseudofruit psuedocarp. A false fruit is a fruit in which some of its flesh is derived not from the the floral ovary but from some other tissue located exterior to the carpel i.e. some other reproductive part of the flower. eg- Apple, Pear, Pineapple, Strawberry etc. - Apple is formed from the thalamus and not from the ovary. So it is known as false fruit.
NEET-2022
Morphology of Plants
62737
Persistent nucellus in the seed is known as
1 Perisperm
2 Hilum
3 Tegmen
4 Chalaza
Explanation:
A The residual persistent nucellus in the seed is called perisperm. - Perisperm is the nutritive tissue derived from persistent nucellus that surrounds the embryo of seed in some angiosperm. eg - Black pepper, Beet. - Nucellus is the central cellular mass of the body of ovule, containing the embryo sac. Helium-Helium is scar left by the stalk which attached the ovule to the ovary wall before it become seed.
