Flowers which have single ovule in the ovary and are packed into inflorescence are usually pollinated by:
(1) Bee
(2) Wind
(3) Bat
(4) Water
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A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers.
(c) The genetic make-up of the tall parent can be depicted as TtWW Since all the progeny bore violet flowers, it means that the tall plant having violet flowers has...
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Define the term inflorescence. Explain the basis for the different types of inflorescence in flowering plants.
Inflorescence is the manner in which the flowers are arranged on the flowering axis. During the flowering season, the vegetative apex of the stem gets converted into a floral meristem....
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What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.
There are two types of flowers present in plants namely Oxalis and Viola − chasmogamous and cleistogamous flowers. Chasmogamous flowers have exposed anthers and stigmata similar to the flowers of other...
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Which is the triploid tissue in a fertilised ovule? How is the triploid condition achieved?
The triploid tissue in the ovule is the endosperm. Its triploid condition is attained due to the fusion of two polar nuclei and one nucleus of male gamete (also referred...
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In order to obtain the F1 generation, Mendel pollinated a true-breeding, say, tall plant with a true-breeding dwarf plant.
Genotype of 50% of the offspring would resemble one parent and the rest the other parent. All the F1 offsprings of the cross are heterozygous so allowing self pollination is sufficient to...
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Which of the following plants have you seen? Of those that you have seen, which one have flowers?
We have seen the following plants: 1. Grass, maize, wheat, chilli, tomato, tulsi, pipal, banyan, mango, jamun, guava, papaya, banana, lemon, sugarcane, potato. Plants having flowers: 2. Maize, wheat, chilli, tomato, tulsi, pipal,...
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15 pastries and 12 biscuit packets have been donated for a school fete. These are to be packed in several smaller identical boxes
Number of pastries = 15 Number of biscuit packets = 12 ∴ The required no of boxes to contain equal number = HCF of 15 and 13 By applying Euclid’s division lemma 15 =...
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Fill in the blanks with the terms that are listed below: anther, male, ovary, ovule, petals, pistil, stamen, filament.
(a)– sepals; (b)– petals; (c)– pistil; (d)– filament; (e)– anther; (f)– male; (g)– pistil; (h)– ovary; (i)– ovules
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Percentages of free space in cubic close packed structure and in body centred packed structure are respectively.
(c) : The packing efficiency in a ccp structure = 74% Therefore, Percentage free space = 100 – 74 = 26% Packing efficiency in a body centred structure = 68% Therefore, Percentage free...
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The phenomenon wherein, the ovary develops into a fruit without fertilisation is called:
a. Parthenocarpy
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