21. Fertilization in flowering plants is called double fertilization because:
(a) One tube nucleus fuses with one egg and one sperm nucleus fuses with another egg.
(b) One sperm nucleus fuses with egg and another sperm nucleus fuses with fusion nucleus.✅
(c) Two sperm nuclei fuses with one egg.
(a) None of the above
22. In peach, the fruit is derived from the:
(a) Megaspores
(b) Endospores✅
(c) Walls of the ovary
(d) Petals
23. The nucleus of the egg is located in the:
(a) Vegetal hemisphere
(b) Animal hemisphere✅
(c) Equator
(d) Middle
24. In plants the gametophytes produce egg and sperm by:
(a) Meiosis✅
(b) Mitosis
(c) Spore formation
(d) Fertilization
25. If you found a dark, rotten smelling flower near the ground it would most likely be pollinated by:
(a) Bats
(b) Beetles
(c) Moths✅
(d) Bees
26. The intestine of frog develops from:
(a) Endoderm✅
(b) Mesoderm
(c) Ectoderm
(d) None of the above
27. Two main types of reproduction are:
(a) Sexual
(b) Binary fission
(c) Asexual
(d) Both a and c✅
28. Fruits and seeds helps in:
(a) Dispersal of plants
(b) dispersal of food
(c) Dispersal of species
(d) All of the above✅
29. The rapid cell division of the zygote which results in the development of morula is:
(a) cleavage✅
(b) modulation
(c) gastrulation
(d) all of them
30. The process by which a tadpole changes into a frog is called:
(a) Growth
(b) Development
(c) Metamorphosis✅
(d) a and b
31. The stage of development of frog zygote, during which ball of cells contains a cavity blastocoel is called:
(a) Blastulation✅
(b) Gastrulation
(c) Archenteron
(d) Any of them
32. In frog fertilization is ______ and occurs:
(a) Internal and on ground
(b) External and on pasture
(c) External and in the water✅
(d) None of them
33. As soon as the nervous system is formed, the embryo becomes:
(a) Morula
(b) Blastula
(c) Gastrula
(d) Neurula✅
34. Reproduction is a biological process leading to production of:
(a) New species,
(b) New genera
(c) New individuals of one's own kind✅
(d) None of the above
35. Two types of seed germination are:
(a) Hypogeal
(b) Epigeal
(c) Stapgeal
(d) Both a and b✅
36. Necessary conditions for seed germination are:
(a) Water and air
(b) Viability of seed
(c) Suitable temperature
(d) All of these✅
37. In Animals the process of formation of sperm is called:
(a) Spermatogenesis✅
(b) Oogenesis
(c) Gluconeogenesis
(d) None of the above
38. In plants pollination plays an important role during:
(a) Parthenogenesis
(b) Sexual reproduction✅
(c) A-Sexual reproduction
(d) None of trhizoids
39. Different types of sexual reproduction are:
(a) Binary fission
(b) Multiple fission
(c) Spore formation
(d) None of them✅
40. Process of asexual reproduction which involves the vegetative parts of flowering plants is called:
(a) Vegetative propagation
(b) Parthenogenesis
(c) Asexual reproduction
(d) all of them✅
➡ Next MCQs Page
0 comments:
Post a Comment