Question 91 of 300
A seed is composed of which two primary structures?
A seed is made up of a seed coat and an embryo.
Morphology of Flowering Plants MCQs
Class XI Biology • NCERT Based • NEET Practice
Question 92 of 300
In a dicotyledonous seed, the seed coat has two layers. The outer layer is the ______ and the inner layer is the ______.
The seed coat of a dicotyledonous seed has two layers, the outer testa and the inner tegmen.
Question 93 of 300
What is the hilum on a dicotyledonous seed coat?
The hilum is a scar on the seed coat through which the developing seeds were attached to the fruit.
Question 94 of 300
In some seeds like castor, a food-storing tissue is formed as a result of double fertilisation. These seeds are called:
In some seeds such as castor the endosperm formed as a result of double fertilisation, is a food storing tissue and called endospermic seeds.
Question 95 of 300
In plants like bean, gram, and pea, endosperm is not present in mature seeds, and they are called:
In plants such as bean, gram and pea, the endosperm is not present in mature seeds and such seeds are called non-endospermous.
Question 96 of 300
While most monocotyledonous seeds are endospermic, which of the following monocot seeds is non-endospermic?
Generally, monocotyledonous seeds are endospermic but some as in orchids are non-endospermic.
Question 97 of 300
In cereals like maize, the outer covering of the endosperm separates the embryo by a proteinous layer called the:
The outer covering of endosperm separates the embryo by a proteinous layer called aleurone layer.
Question 98 of 300
In a monocotyledonous seed, the large and shield-shaped cotyledon is known as the ______; while the plumule and radicle are enclosed in sheaths called ______ and ______ respectively.
The monocot embryo consists of one large and shield shaped cotyledon known as scutellum, and a short axis with a plumule and a radicle enclosed in sheaths called coleoptile and coleorhiza respectively.
Question 99 of 300
In a floral formula, what do the symbols 'K' and 'C' represent, and how is adhesion between whorls indicated?
In the floral formula, K stands for calyx and C for corolla. Fusion is indicated by enclosing the figure within brackets, and adhesion by a line drawn above the symbols of the floral parts.
Question 100 of 300
Which of the following represents the correct combination of vegetative and floral characters of the Solanaceae family?
Solanaceae exhibits: underground stem in potato; alternate, exstipulate leaves with reticulate venation; bisexual, actinomorphic flowers; persistent calyx; epipetalous stamens; superior, bilocular ovary with axile placentation and swollen placenta.