ICAR JRF Plant Reproduction — practice questions
63 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice ICAR JRF Plant Reproduction in the app →In the plant life cycle, the haploid gametophyte produces gametes by which process?Which stage dominates the life cycle of higher plants?The stalk on which a flower is borne is called what?Which four whorls are present in a complete flower?The sepals of a flower are collectively known as what, and what do they do?The calyx and corolla taken together are known as what?How does petal number typically differ between monocots and dicots?A flower with only a gynoecium and no androecium is described as what?A species bearing male and female flowers on separate plants is described as what?An ovary placed below the other flower parts is described as what?The individual unit of the gynoecium consists of which three parts?Within the microsporangium, the microspore mother cell divides by meiosis to give how many microspores?What does the tapetum do inside an anther?A mature pollen grain contains which two cells?Which substance in the exine allows pollen to survive unfavourable conditions and rough transport?In megasporogenesis, how many of the four megaspores produced survive?Megagametogenesis produces a female gametophyte with which composition?What is the role of the synergid cells in the embryo sac?The opening in the integuments through which a pollen tube enters is called what?In gymnosperms, roughly how long does the pollen tube take to grow towards the female gametophyte?Which event of the angiosperm life cycle is completely absent in gymnosperms?In angiosperms, pollination is defined as the transfer of pollen between which two structures?Which statement correctly defines cross-pollination?Why does cross-pollination lead to greater genetic diversity than self-pollination?In the primrose, two flower forms differ in the length of anthers and stigma. What is this called?Self-incompatibility in flowering plants is controlled by which locus?Bee-pollinated flowers rarely appear red. Why?Flowers pollinated by flies typically show which combination?Moth-pollinated flowers tend to have which form?Which set of features marks a bird-pollinated flower?Which feature is absent from wind-pollinated flowers?In the sexual deception used by Chiloglottis trapeziformis, what does the orchid emit?In double fertilisation, what do the two sperm cells produce?After fertilisation, the fertilised ovule and the ovary tissues become what?What is the function of the suspensor in a developing embryo?A typical seed contains which set of structures?The scutellum of a monocot seed is best described as which kind of organ?Which layer secretes the enzymes that mobilise stored reserves when a cereal grain germinates?In a non-endospermic dicot such as the pea, where do the food reserves end up?In a dicot seed, the seed coat divides into which two layers?Which part of the embryonic axis gives rise to the root?What is the purpose of the hook shape formed by the epicotyl of a germinating dicot seed?In a germinating monocot seed, what does the coleoptile cover?Why does a germinating monocot end up with a fibrous root system?Which treatment softens a thick seed coat to allow germination?Why do seeds of small-seeded species usually require light as a germination cue?Which fruit type develops from an inflorescence, that is a cluster of flowers?Strawberry and apple are classed as accessory fruits because they develop from what?The exocarp, mesocarp and endocarp of a fruit are together known as what?How do dehiscent fruits differ from indehiscent fruits?Seed dormancy lets a plant disperse its progeny in a way animals cannot. In what way?The production of seeds without fertilisation is known as what?Why are plants produced by asexual reproduction genetically identical to the parent?Which is given as an advantage of asexual reproduction in plants?In grafting, what are the scion and the stock?Which propagation method bends a stem that is still attached to the parent and covers it with soil?In plant tissue culture, the undifferentiated mass from which plantlets later grow is called what?A carrot, which completes its life cycle in two seasons, is which kind of plant?Bamboo and yucca flower only once in their lifetime. Such plants are called what?How long may the vegetative period last in some bamboo species before flowering?Which characteristic of senescence explains the yellowing of leaves?What happens to the components of a leaf that a tree is about to shed?In Bryophyllum and kalanchoe, new plants develop from which structure?