CH-19 Growth & Development Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "CH-19 Growth & Development" Click on "Start Quiz" To Continue... 1. During elongation the cell volume increases up to 150 times due to uptake of: Food Minerals Water Air None 2. What causes apical dominance by diffusing from the apical bud which inhibits the growth of lateral buds? Food Minerals Water Auxin None 3. At the cephalic end of primitive streak, closely packed cells from a local thickening known as: Splanchnic mesoderm Somatic mesoderm Hensen's node Gastrocoele None 4. Zygote which animal spemann divided into two equal halves with the help of minute ligature of human hair? Salamander Frog Fish Sheep None 5. This alga has a long stalk with an umbrella shaped cap at its top and rhizoids, attached to the ground: Acetabularia Spirogyra Euglena Chlamydomonas None 6. From how many celled embryo did spemann observed, that if a single cell is separated, it contains a complete set of genes and forms a complete embryo? 8 12 20 16 None 7. The human life span is judged to be maximum of: 150 years 60 years 90 years 120 - 125 years None 8. This is the condition in which one of the sex chromosome is missing: Klinefelter's syndrome Turner's syndrome Trisomy Mutation None 9. 25-30⁰C: Optimum temperature for growth Secondary growth Apical meristems Photoperiodism None 10. Neurula: Body organs formed, cells interact and differentiate Blastocoele formed Folding of neural plate visible Translucent appearance in Blastoderm None 11. Thimann and Skoog: 22ⁿᵈ day Apical dominance 21ˢᵗ day Gives to muscle cells None 12. Which of the following is irrelevant for growth and development? Cell division Cell elongation Differentiation All of the above None 13. The growth of flowers is: Indeterminate Determinate Automatic Controlled None 14. The formation of cells of pith, cortex and vascular bundle is: Cell elongation Cell growth Maturation Cell division None 15. Which of the following is external factor in growth? Hormone Nutrition Temperature Water None 16. Which of the following factors supply energy during growth? Hormones Water Vitamins Nutrients None 17. Xylem and phloem are formed in: Stage 1 Stage 5 Stage 4 Stage 6 None 18. The phenomenon which inhibits the sprouting of lateral bud is: Apical dominance Inhibitory effects Compensatory effects None of the above None 19. The upper area with translucent appearance is: Area pellucida Area opaca Area of cell division None of the above None 20. Closely packed cells at cephalic end of primitive streak from a local thickening called: Primitive gut Hensen's node Primitive streak Somites None 21. During the development of chick, somites are formed after: 20 to 25 hours 25 - 26 hours 26 to 27 hours 28 to 29 hours None 22. Neural groove is formed after: 19-20 hours 21-22 hours 23-24 hours 24-25 hours None 23. The part of cytoplasm which form notochord is: Clear cytoplasm Yellow cytoplasm Grey vegetal Grey equatorial None 24. Selection of genes is done by: Nucleus Chromosome Cytoplasm Ribosomes None 25. The biologists perform experiments on induction: Spemann Mangold Both None None 26. Which of the following possesses the greatest power of regeneration? Reptiles Amphibians Man Sponges None 27. Earth worm can regenerate: Skin Tail Setae Head None 28. Lizard can regenerate: Head Limbs Tail Skin None 29. The branch which deals with the study of abnormal structures is: Physiology Teratology Gerontology Herpetology None 30. The syndrome which leads to tolerance and aggressiveness is: XXY XO XYY XXX None 31. Match tetrogen with the deficiency of one of the following: Insulin Gene Nutritional None None 32. Differentiation means: Formation of similar cells from different cells Formation of different tissues from similar cells Formation of similar tissues from similar cells None of the above None 33. Growth correlation means: One part inhabit the growth of other part One part promotes the growth of the other part One part affects the growth of the other parts All of the above None 34. Primitive streak forms: Digestive system of embryo Muscles of embryo It does not form any structure It supports the embryo None 35. The role of Cytoplasm in development is: Acts as template to form new structure Receives information from Nucleus Turns the genes on and off Does not take part in the development None 36. Which of the following is not aging? Loss of hair pigment Dryness of skin Increase of number of cells Increase of body weight None 37. The planaria has: Differentiated cells for regeneration Undifferentiated cells for regeneration Special cells for regeneration None of the above None 38. Intermediate growth is: Growth stops after sometimes Growth stops but starts again Growth never stop Growth continues during youth age None 39. The condition of small skull is: Haemophilia Cleft palate Microcephaly Polydactyl None 40. Tetrogens are: Genetic factors Environmental factors Hormonal facts Metabolic factors None 1 out of 8 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
