CBSE Class 12 Sexual Reproduction in Flowering Plants — practice questions
37 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 12 Sexual Reproduction in Flowering Plants in the app →The female reproductive whorl of a flower is theA typical angiosperm embryo sac hasThe tough outer wall (exine) of pollen grains is made ofDouble fertilisation in angiosperms producesPollination of grasses occurs mainly throughSelf-incompatibility is a mechanism that preventsA complete flower has FOUR whorls. From outermost to innermost they are:Microsporogenesis (pollen formation) is initiated when:The mature embryo sac (female gametophyte) in flowering plants typically has:Pollination is best defined as the transfer of pollen from:Pollination by INSECTS is called:In double fertilisation, the second male gamete fuses with:In a typical dicot embryo, the number of cotyledons is:In the fruit, the OVARY WALL develops into the:Parthenocarpy refers to:An anther is four-sided with four microsporangia, ___ in each lobe.Each microsporangium releases how many pollen grains when the anther splits?Pollen grains represent the male:Sporopollenin lets pollen exine survive:In a mature pollen grain, which cell is bigger with abundant food reserve?Carrot grass, Parthenium, came to India as a contaminant with imported:Rice and wheat pollen lose viability within about:The stalk that attaches an ovule to the placenta is the:The basal part of the ovule, opposite the micropyle, is the:A wheat ovary has one ovule; a papaya ovary has:The egg apparatus consists of one egg cell and two:Closed cleistogamous flowers give assured seed set even without:Wind-carried pollen must be:The tassels on a corn cob that wave in the wind are the:Water lily flowers rise above the water and are pollinated by:Wind and water pollinated flowers are usually not colourful and do not produce:Flowers pollinated by flies and beetles attract them with:Insects that eat nectar without pollinating are called:Continued self-pollination leads to:Which develops first after double fertilisation?Wheat, maize and castor seeds keep part of their endosperm. They are:A mature seed has moisture of only about: