REPRODUCTION IN ORGANISMS

Previous Years

1. In ginger vegetative propagation occurs through: [2015 RS] (a) Offsets (b) Bulbils (c) Runners (d) Rhizome 2. Which of the following pairs is not correctly matched? [2015 RS] Mode of reproduction Example (a) Rhizome Banana (b) Binary fission Sargassum (c) Conidia Penicillium (d) Offset Water hyacinth 3. Which one of the following is correctly matched? [2012] (a) Onion - Bulb (b) Ginger - Sucker (c) Chlamydomonas - Conidia (d) Yeast – Zoospores 4. The “Eyes” of the potato tuber are [2011] (a) root buds (b) flower buds (c) shoot buds (d) axillary buds 5. What is common between vegetative reproduction and apomixis[2011M] (a) Both are applicable to only dicot plants (b) Both bypass the flowering phase (c) Both occur round the year (d) Both produce progeny identical to the parent 6. Which one of the following pairs is wrongly matched while the remaining three are correct? [2011M] (a) Penicillium - Conidia (b) Water hyacinth - Runner (c) Bryophyllum - Leaf buds (d) Agave - Bulbils 7. Vegetative propagation in mint occurs by: (a) Offset (b) Rhizome [2009] (c) Sucker (d) Runner 8. In which one pair both the plants can be vegetatively propagated by leaf pieces? [2005] (a) Agave and Kalanchoe (b) Bryophyllum and Kalanchoe (c) Asparagns and Bryophyllum (d) Chrysanthemum and Agav 9. What is true for cleavage? [2002] (a) Size of embryo increases (b) Size of cells decrease (c) Size of cells increase (d) Size of embryo decreases 10. During regeneration, modification of an organ to other organ is known as [2001] (a) Morphogenesis (b) Epimorphosis (c) Morphallaxis (d) Accretionary growth 11. A population of genetically identical individuals, obtained from asexual reproduction is[1993] (a) Callus (b) Clone (c) Deme (d) Aggregate 12. Vegetative reproduction of Agave occurs through [1991] (a) rhizome (b) stolon (c) bulbils (d) sucker 13. Seed formation without fertilization in flowering plants involves the process of: [2016] (a) Sporulation (b) Budding (c) Somatic hybridization (d) Apomixis 14. Select the wrong statement: [NEET 2013] (a) Anisogametes differ either in structure, function or behaviour. (b) In Oomycetes female gamete is smaller and motile, while male gamete is larger and non-motile. (c) Chalmydomonas exhibits both isogamy and anisogamy and Fucus shows oogamy. (d) Isogametes are similar in structure, function and behaviour 15. Monoecious plant of Chara shows occurrence of : [NEET 2013] (a) Stamen and carpel of the same plant (b) Upper antheridium and lower oogonium on the same plant (c) Upper oogonium and lower antheridium on the same plant (d) Antheridiophore and archegoniophore on the same plant 16. Meiosis takes place in : [NEET 2013] (a) Conidia (b) Gemmule (c) Megaspore (d) Meiocyte 17. Syngamy can occur outside the body of the organism in [NEET Kar. 2013] (a) Fungi (b) Mosses (c) Algae (d) Ferns 18. Geocarpic fruits are produced by [2000, 02] (a) Onion (b) Watermelon (c) Ground nut (d) Carrot 19. Which of the following processes is associated with a change in the cellular DNA amount? [1999] (a) Spore germination (b) Cytokinesis (c) Fertilization (d) Blastulation 20. The correct sequence in the process of development of human embryo is [1998] (a) Fertilization—zygote—cleavage—morula—blastula—gastrula (b) Fertilization—cleavage—morula—zygote—blastula—gastrula (c) Fertilization—zygote—blastula—morula—cleavage—gastrula (d) Cleavage—zygote—fertilization—morula—blastula—gastrula 21. In an egg, the type of cleavage is determined by [1995] (a) Shape and size of the sperm (b) Size and location of the nucleus (c) Amount and distribution of yolk (d) Number of egg membranes 22. What is true about cleavage in fertilized egg of humans? [1994] (a) Meroblastic (b) Starts when egg reaches uterus (c) Starts in fallopian tube (d) It is identical to normal mitosis 23. A perennial plant differs from biennial in [1994] (a) Having underground perennating structure (b) Having asexual reproductive structures (c) Being tree species (d) Not dying after seasonal production of flowers 24. Termination of gastrulation is indicated by (a) Obliteration of blastocoel [1993] (b) Obliteration of archenteron (c) Closure of blastopore (d) Closure of neural tube 25. In telolecithal egg the yolk is found [1993] (a) all over the egg (b) On one side (c) Both the sides (d) Centre 26. Amount of yolk and its distribution are changed in the egg. Which one is affected? (a) Pattern of cleavage [1993] (b) Formation of zygote (c) Number of blastomeres (d) Fertilization 27. Meroblastic cleavage is division [1992] (a) Horizontal (b) partial/parietal (c) Total (d) spiral 28. Blastopore is [1992] (a) Opening of neural tube (b) Opening of gastrocoel (c) Future anterior end of embryo (d) Found in blastula 29. During cleavage, what is true about cells? [1991] (a) Nucleocytoplasmic ratio remains unchanged (b) Size does not increase (c) There is less consumption of oxygen (d) The division is like meiosis 30. Cells become variable in morphology and function in different regions of the embryo. The process is [1989] (a) Differentiation (b) Metamorphosis (c) Organisation (d) Rearrangement Answer key
1 d 13 d 25 b
2 b 14 b 26 a
3 a 15 c 27 b
4 d 16 d 28 b
5 d 17 c 29 b
6 b 18 c 30 a
7 c 19 c    
8 b 20 a    
9 b 21 c    
10 b 22 c    
11 b 23 d    
12 c 24 a