QUESTIONS FROM STATE BOARD EXAMINATIONS:
A There are 16 chromosomes in a vegetative cell of pea plant. How many chromosomes will be in the following:(i) Pollen grain (ii) Endosperm (iii) Antipodal (iv) Egg cell

QUESTIONS FROM STATE BOARD EXAMINATIONS : What would be the ploidy in cells of microspore tetrad?

Short Answer Questions A. QUESTIONS FROM STATE BOARD EXAMINATIONS : Name the methods of vegetative propagation used in following plants. (i) Rose, (ii) Sugarcane: (iii) Bougainvillea, (iv) Money plant, (v) Strawberry.

QUESTIONS FROM CBSE BOARD EXAMINATIONS : What is the fate of haploid megaspores formed by megaspore mother cell in an angiospermic plant?

Long Answer Questions Five mark Each QUESTIONS FROM CBSE BOARD EXAMINATIONS : (a) Draw a diagrammatic sectional view of a mature anatropous ovule and label the following parts in it: (i) that develops into seed coat. (ii) that develops into an embryo after fertilization. (iii) that develops into an endosperm in an albuminous seed. (iv) through which the pollen tube gains entry into the embryo sac. (v) that attaches the ovule to the placenta (b) Describe the characteristic features of wind pollinated flowers.

QUESTIONS FROM CBSE BOARD EXAMINATIONS : In angiosperms, zygote is diploid, while primary endosperm cell is triploid. Explain.

QUESTIONS FROM STATE BOARD EXAMINATIONS: Arrange the following words in correct development sequence : Pollen grain, sporogenous tissue, microspore tetrad, microspore mother cell

Long Answer Questions Five mark Each QUESTIONS FROM CBSE BOARD EXAMINATIONS : A flower of tomato plant following the process of sexual reproduction produces 240 viable seeds. Answer the following questions giving reasons: (a) What is the minimum number of pollen grains that must have been involved in the pollination of its pistil? (b) What would have been the minimum number of ovules present in the ovary? (c) How many megaspore mother cells were involved? (d) What is the minimum number of microspore mother cells involved in the above case? (e) How many male gametes were involved in this case?

Short Answer Questions Three mark Each QUESTION FROM STATE BOARD EXAMINATIONS (a)Write the characteristic features of anther, pollen and stigma of wind pollinated flowers. (b) How do flowers reward their insect pollinators? Explain.

Long Answer Questions Five mark Each QUESTIONS FROM STATE BOARD EXAMINATIONS : Three different flowers are given to you in the practical class: (i) Maize (ii) Vallisneria (iii) Rose You are asked to group them on pollinating agents. Describe the adaptations of each flower related with agents of pollination.

Long Answer Questions Five mark Each QUESTIONS FROM STATE BOARD EXAMINATIONS : With the help of labelled diagrams, depict the stages of microspore maturing into a pollen grain.