REPRODUCTION IN ORGANISMS

31. Oestrous cycle occurs in females of:
A) Monkeys
B) Cows
C) Apes
D) Humans
Correct Answer: B

32. Which of the following statements regarding the given terms are correct?
Runners Tubers Offsets
A) These all are incapable of giving rise to new individuals and formation of these structures does not involve two parents.
B) These all are capable of giving rise to new individuals and formation of these structures does not involve two parents.
C) These all are capable of giving rise to new individuals but formation of these structures involves two parents for reproduction.
D) These are all incapable of giving rise to new individuals but formation of these structure involves two parents for reproduction
Correct Answer: B

33. Match column-I with column- II and select the correct answer using the codes given below.
column-I(Name of the organism) column- II(Chromosome number in meiocyte) (2n)
A. House fly I. 20
B. Fruit fly II. 34
C. Apple III. 8
D. Maize IV. 12
A) A-II;      B-III;      C-IV;     D-I
B) A-III;     B-IV;      C-II;      D-I
C) A-IV;     B-III;      C-I;        D-II
D) A-IV;     B-III;      C-II;       D-I
Correct Answer: D

34. The terms homothallic and monoecious are used to denote:
A) Bisexual condition
B) Unisexual condition
C) Staminate flowers
D) Pistillate flowers
Correct Answer: A

35. If cotyledons are brought above the soil, the germination is:
A) Hypogeal
B) Epigeal
C) Vivipary
D)None of these
Correct Answer: B

36. Some organisms are capable of asexual or sexual reproduction. Under favoura conditions, reproduction proceeds asexually. When conditions become more stressful eproduction switches to a sexual mode. Why?
A) Sexual reproduction is simple and more rapid allowing larger numbers of off springs to be produced.
B) Sexual reproduction requires two separate individuals, who can mutually provide nutrient support during stress.
C) Sexual reproduction produces individuals with new combinations of recombined chromosomes increasing diversity.
D) Asexual reproduction requires more energy.
Correct Answer: C

37. Meiocytes is observed in all except:
A) Human egg
B) Blue-green algae
C) Equisetum
D) Dicot plant
Correct Answer: B

38. In the given figure of water hyacinth, a structure is marked as "X". This structure is involved in vegetative propagation as a unit of vegetative propagules. Identify the type of unit.
A) Tuber
B)Offsets
C) Sucker
D)Rhizome
Correct Answer: B

39. Match column-I with column-II and select the correct answer using the codes given below.
Column-I Column-II
A. Sponge I. Tuber
B. Yeast II. Offset
C. Potato III. Gemmules
D. Water hyacinth IV. Budding
A) A-IV;     B-I;    C-II;     D-III
B) A-III;     B-I;    C-IV;   D-II
C) A-III;     B-IV;   C-I;     D-II
D) A-III;     B-IV;   C-II;    D-I
Correct Answer: C

40. Which of the following statements are correct?
(i) Euglena divides by longitudinal binary fission (ii) Cytokinesis takes place along transverse axis in Paramoecium.
(iii) Amoeba divides by irregular binary fission.
(iv) In multiple fission, parental body divides into many daughter cells under favourable conditions.
A) (i) and (iv)
B) Only (iv)
C) (i), (ii) and (iii)
D)(ii) and (iv)
Correct Answer: C
41. Which of the following statements regarding the asexual reproduction is incorrect?

A) Both mitotic and meiotic division occurs.
B) It does not contribute to evolution and speciation.
C) It is uniparental and usually occurs in unicellular organisms.
D) There is no variation and the off springs have the same phenotype and genotype.

Correct Answer: A

42. Offsprings of oviparous animals are at greater risk as compared to off springs of viviparous animals because:
A) Proper embryonic care and protection is lesser.
B) Embryo is not developed.
C) Progenies are with more variation.
D) Progenies are larger.
Correct Answer: A

43. Agamospermous embryo sac develops from:
A) Pollen
B) Egg
C) Ovum
D) Megaspore mother cell
Correct Answer: D

44. Offspring formed by sexual reproduction exhibits more variation than those formed by asexual reproduction because:
A) Sexual reproduction is a lengthy process.
B) Genetic material comes from two parents of different species.
C) Genetic material comes from two parents of same species
D) Greater amount of DNA is involved in sexual reproduction.
Correct Answer: C

45. Which of the labelled parts (1 and 2) in the transverse section of pea plant is/are diploid?
A) 1
B) 2
C) Both [a] and [b]
D) None of these
Correct Answer: C

46. Select the incorrect statements.
A) Cucurbits and coconuts are monoecious plants.
B) Papayas and date palms are dioecious plants.
C) Leeches and tapeworms are bisexual animals.
D) Sponges and coelenterates are unisexual animals.
Correct Answer: D

47. Which of the following statements about animals that utilise external fertilisation is incorrect?
A) They are divided equally between terrestrial and aquatic species.
B) Many produce large numbers of gametes to ensure successful reproduction.
C) The behaviours associated with mating are often highly synchronised.
D) The probability of any one egg being fertilized and developing into an adult can be low.
Correct Answer: A

48. The given figures P (plant Chard) and Q (Earthworm) have label 1, 2, 3 and 4 as their reproductive organs. Select the option which correctly identifies male reproductive organs of the two organisms.
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) 2 and 4
Correct Answer: B

49. Match column-I with column- II and select the correct answer using the codes given below.
Column-I Column-II
A. Gamete I. Result of fusion of male and female gametes.
B. Budding II. Division of body into two equal halves.
C. Fission III. Germ cells.
D. Fertilisation IV. The fusion of male and female gametes.
E. Zygote V. An unequal division of organisms in which individual arises as an outgrowth from the parent.
A) A-I;     B-II;     C-III;    D-IV;    E-V
B) A-III;    B-V;      C-II;      D-IV;    E-I
C) A-III;     B-I;       C-V;     D-II;    E-IV
D) A-V;     B-IV;      C-III;     D-I;    E-II
Correct Answer: B

rasheeda

31. Oestrous cycle occurs in females of:
A) Monkeys
B) Cows
C) Apes
D) Humans
Correct Answer: B

34. The terms homothallic and monoecious are used to denote:
A) Bisexual condition
B) Unisexual condition
C) Staminate flowers
D) Pistillate flowers
Correct Answer: A

35. If cotyledons are brought above the soil, the germination is:
A) Hypogeal
B) Epigeal
C) Vivipary
D)None of these
Correct Answer: B

37. Meiocytes is observed in all except:
A) Human egg
B) Blue-green algae
C) Equisetum
D) Dicot plant
Correct Answer: B

38. In the given figure of water hyacinth, a structure is marked as "X". This structure is involved in vegetative propagation as a unit of vegetative propagules. Identify the type of unit.
A) Tuber
B)Offsets
C) Sucker
D)Rhizome
Correct Answer: B

A) Both mitotic and meiotic division occurs.
B) It does not contribute to evolution and speciation.
C) It is uniparental and usually occurs in unicellular organisms.
D) There is no variation and the off springs have the same phenotype and genotype.

Correct Answer: A

42. Offsprings of oviparous animals are at greater risk as compared to off springs of viviparous animals because:
A) Proper embryonic care and protection is lesser.
B) Embryo is not developed.
C) Progenies are with more variation.
D) Progenies are larger.
Correct Answer: A

43. Agamospermous embryo sac develops from:
A) Pollen
B) Egg
C) Ovum
D) Megaspore mother cell
Correct Answer: D

45. Which of the labelled parts (1 and 2) in the transverse section of pea plant is/are diploid?
A) 1
B) 2
C) Both [a] and [b]
D) None of these
Correct Answer: C

46. Select the incorrect statements.
A) Cucurbits and coconuts are monoecious plants.
B) Papayas and date palms are dioecious plants.
C) Leeches and tapeworms are bisexual animals.
D) Sponges and coelenterates are unisexual animals.
Correct Answer: D

48. The given figures P (plant Chard) and Q (Earthworm) have label 1, 2, 3 and 4 as their reproductive organs. Select the option which correctly identifies male reproductive organs of the two organisms.
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) 2 and 4
Correct Answer: B

31. Oestrous cycle occurs in females of:A) Monkeys B) CowsC) Apes D) HumansCorrect Answer: B

34. The terms homothallic and monoecious are used to denote:A) Bisexual condition B) Unisexual conditionC) Staminate flowers D) Pistillate flowersCorrect Answer: A

35. If cotyledons are brought above the soil, the germination is:A) Hypogeal B) EpigealC) Vivipary D)None of theseCorrect Answer: B

37. Meiocytes is observed in all except:A) Human egg B) Blue-green algaeC) Equisetum D) Dicot plantCorrect Answer: B

38. In the given figure of water hyacinth, a structure is marked as "X". This structure is involved in vegetative propagation as a unit of vegetative propagules. Identify the type of unit. A) Tuber B)OffsetsC) Sucker D)RhizomeCorrect Answer: B

A) Both mitotic and meiotic division occurs.B) It does not contribute to evolution and speciation.C) It is uniparental and usually occurs in unicellular organisms.D) There is no variation and the off springs have the same phenotype and genotype.

Correct Answer: A

42. Offsprings of oviparous animals are at greater risk as compared to off springs of viviparous animals because: A) Proper embryonic care and protection is lesser.B) Embryo is not developed.C) Progenies are with more variation.D) Progenies are larger.Correct Answer: A

43. Agamospermous embryo sac develops from:A) PollenB) EggC) OvumD) Megaspore mother cellCorrect Answer: D

45. Which of the labelled parts (1 and 2) in the transverse section of pea plant is/are diploid? A) 1 B) 2C) Both [a] and [b]D) None of theseCorrect Answer: C

46. Select the incorrect statements.A) Cucurbits and coconuts are monoecious plants.B) Papayas and date palms are dioecious plants.C) Leeches and tapeworms are bisexual animals.D) Sponges and coelenterates are unisexual animals.Correct Answer: D

48. The given figures P (plant Chard) and Q (Earthworm) have label 1, 2, 3 and 4 as their reproductive organs. Select the option which correctly identifies male reproductive organs of the two organisms. A) 1 and 2 B) 2 and 3C) 1 and 3 D) 2 and 4Correct Answer: B

31. Oestrous cycle occurs in females of:
A) Monkeys
B) Cows
C) Apes
D) Humans
Correct Answer: B

34. The terms homothallic and monoecious are used to denote:
A) Bisexual condition
B) Unisexual condition
C) Staminate flowers
D) Pistillate flowers
Correct Answer: A

35. If cotyledons are brought above the soil, the germination is:
A) Hypogeal
B) Epigeal
C) Vivipary
D)None of these
Correct Answer: B

37. Meiocytes is observed in all except:
A) Human egg
B) Blue-green algae
C) Equisetum
D) Dicot plant
Correct Answer: B

38. In the given figure of water hyacinth, a structure is marked as "X". This structure is involved in vegetative propagation as a unit of vegetative propagules. Identify the type of unit.
A) Tuber
B)Offsets
C) Sucker
D)Rhizome
Correct Answer: B

A) Both mitotic and meiotic division occurs.
B) It does not contribute to evolution and speciation.
C) It is uniparental and usually occurs in unicellular organisms.
D) There is no variation and the off springs have the same phenotype and genotype.

42. Offsprings of oviparous animals are at greater risk as compared to off springs of viviparous animals because:
A) Proper embryonic care and protection is lesser.
B) Embryo is not developed.
C) Progenies are with more variation.
D) Progenies are larger.
Correct Answer: A

43. Agamospermous embryo sac develops from:
A) Pollen
B) Egg
C) Ovum
D) Megaspore mother cell
Correct Answer: D

45. Which of the labelled parts (1 and 2) in the transverse section of pea plant is/are diploid?
A) 1
B) 2
C) Both [a] and [b]
D) None of these
Correct Answer: C

46. Select the incorrect statements.
A) Cucurbits and coconuts are monoecious plants.
B) Papayas and date palms are dioecious plants.
C) Leeches and tapeworms are bisexual animals.
D) Sponges and coelenterates are unisexual animals.
Correct Answer: D

48. The given figures P (plant Chard) and Q (Earthworm) have label 1, 2, 3 and 4 as their reproductive organs. Select the option which correctly identifies male reproductive organs of the two organisms.
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) 2 and 4
Correct Answer: B