What is perisperm Ncert? Perisperm is the remnant of nucellus which are persistent. It encloses the embryo and provides nourishment to it in certain seeds. It surrounds, stores food and provide nourishment to the embryo
What is perisperm Ncert?
Perisperm is the remnant of nucellus which are persistent. It encloses the embryo and provides nourishment to it in certain seeds. It surrounds, stores food and provide nourishment to the embryo in an angiosperm seed. It is diploid in nature.
Is perisperm persistent nucellus?
In some seeds, remains of nucellus persist. This residual nucellus which persists in the seed is called perisperm, e.g., black pepper, coffee, castor, cardamum, Nymphaea.
What is perisperm answer?
Hint: It is a food storing seed tissue which is developed from the nucellus. Complete answer: Perisperm is a layer of nutritive tissue that surrounds the embryo of a seed. It provides nutrition to the developing embryo and is formed at the micropylar end of the ovule.
Is perisperm a triploid tissue?
Complete answer: It is triploid tissue. Perisperm is usually a haploid tissue and it is remnant of the nucellus. Being a diploid tissue, it is formed from the nucleus by the equational division and the endosperm is triploid.
What is perisperm example?
The perisperm is the nutritive tissue of a seed derived from the nucellus and deposited external to the embryo sac —distinguished from endosperm. Some examples of perispermic seeds are Sugar beet, coffee, and black pepper.
Where is perisperm found?
In some angiosperms, the perisperm is a layer of nutritive tissue derived from the nucellus that surrounds the embryo of the seed. It is a diploid food storing tissue. – Examples of seeds containing persistent perisperm is black pepper, castor, coffee, cardamom, etc.
What is the role of perisperm?
This residual persistent nucellus is perisperm while the part of a seed that acts as a food store for the developing plant embryo, containing starch with protein and other nutrients are endosperm. It represents persistent remains of nucellus (of ovule) to the seed. It contains reserve food materials. It is usually dry.
What is perisperm Class 12 example?
Example: Wheat. Perisperm is the nutritive tissue derived from the nucellus that surrounds the embryo of seed in some angiosperm.
What is perisperm with example?