Doubtly
@Doubtly · Joined Feb 2021
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- Which of the following is a post-fertilisation event in flowering plants? (b) Embryo development 2
- There are various types of reproduction. The type of reproduction adopted by an organism depends on d) the organisms habitat, physiology and genetic makeup. 2
- There is no natural death in single celled organisms like Amoeba and bacteria because (c) parental body is distributed among the offspring 2
- Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because (b) nodes have meristematic cells 2
- The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete (c) 12, 24, 24 2
- The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because (a) offspring do not possess exact copies of parental DNA 2
- The wall of the ovary forms (a) pericarp (b) fruit wall (c) fruit (d) both (a) and (b). (d) both (a) and (b). 2
- In which of the following plants, sepals do not fall off after fertilisation and remain attached to the fruit? (a) Brinjal is the correct option 2
- In flowering plants, both male and female gametes are non-motile. The method to bring them together c) pollination 2
- If a butterfly has chromosome number 360 in its meiocyte (2n). What will be the chromosome number in its gametes? (b) 190 is correct option 2
- In maize, a meiocyte has 20 chromosomes. What will be the number of chromosomes in its somatic cell? (c) 20 is correct option 2
- Which of the following organisms has the highest number of chromosomes? (c) Ophioglossum 2
- A diploid parent plant body produces ________ gametes and a haploid parent plant body produces ________ gametes. (d) haploid, haploid 2
- Meiosis does not occur in (a) asexually reproducing diploid individuals (a) asexually reproducing diploid individuals 2
- Read the following statements and select the incorrect one. (a) Cucurbits and coconuts are monoecious plants. (d) Sponges and coelenterates are unisexual animals. 2
- Which of the following options shows bisexual animals only? (c) Earthworm, sponge, leech 2
- Which of the following groups is formed only of the hermaphrodite organisms? (d) Earthworm, tapeworm, leech, sponge 2
- Which of the following is a unisexual organism? the following is a unisexual organism 1