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NEET • BIOLOGY • REPRODUCTION IN ORGANISMS
Reproduction in organisms practice · Mixed difficulty
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Showing 61-90 of 90 questions
61
Medium
61 of 90
Understanding
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Arrange the following in ascending manner basing on their lifespan?
(A) Carrot (B) Wolffia (C) Rose (D) Pinus
(A) Carrot (B) Wolffia (C) Rose (D) Pinus
View answer and explanation
Correct option: D
b,a,c,d
Option D (b,a,c,d) is correct because Wolffia has the shortest lifespan, followed by Carrot, Rose, and then Pinus.
62
Hard
62 of 90
Understanding
+4 | -1
In a practical test, a student has to identify the organisms in which syngamy does not occur. In those organisms the female gamete undergoes development to form new organisms without fertilization. This phenomenon is called "X". Identify the organisms and the phenomenon "X".
View answer and explanation
Correct option: D
Honeybee, Parthenogenesis
Option D (Honeybee, Parthenogenesis) is correct because honeybees exhibit parthenogenesis, where unfertilized eggs develop into new individuals.
63
Medium
63 of 90
Analyzing
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S-I: Reproduction becomes a vital process without which species can survive for long
S-II: Sexual mode of reproduction enables creation of new variants, so that survival advantage is decreased.
S-II: Sexual mode of reproduction enables creation of new variants, so that survival advantage is decreased.
View answer and explanation
Correct option: D
Statement I and II are incorrect
Option D (Statement I and II are incorrect) is correct because reproduction is vital for species survival, and sexual reproduction increases survival advantage through variation.
64
Hard
64 of 90
Understanding
+4 | -1
(A): Plants flower every year in a particular season are called polycarpic plants
(R): All perennial plants are polycarpic
(R): All perennial plants are polycarpic
View answer and explanation
Correct option: C
A is true but R is false
Option C (A is true but R is false) is correct because plants that flower every year in a particular season are called polycarpic plants, but not all perennial plants are polycarpic; some are monocarpic.
65
Medium
65 of 90
Remembering
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The sequence of events occurring during the entire lifespan of living organism?
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Correct option: A
Juvenile phase – mature phase – old age – death
Option A (Juvenile phase – mature phase – old age – death) is correct because it represents the correct sequence of events in the lifespan of a living organism.
66
Hard
66 of 90
Understanding
+4 | -1
Nothing lives forever, but life continues'. What does it mean?
View answer and explanation
Correct option: A
Older die but new are produced due to reproduction
Option A (Older die but new are produced due to reproduction) is correct because it accurately describes the continuation of life through reproduction and the natural cycle of death and birth.
67
Medium
67 of 90
Understanding
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Read the following statements.
1) Statement-A: During favourable conditions, Amoeba undergoes encystation by forming 3 cyst walls.
2) Statement-B: Multiple fission and sporulation occurs in Amoeba under unfavourable conditions.
Choose the correct option.
1) Statement-A: During favourable conditions, Amoeba undergoes encystation by forming 3 cyst walls.
2) Statement-B: Multiple fission and sporulation occurs in Amoeba under unfavourable conditions.
Choose the correct option.
View answer and explanation
Correct option: D
Only statement B is correct
Option D (Only statement B is correct) is correct because Amoeba undergoes encystation under UNfavorable conditions, and multiple fission/sporulation also occurs under unfavorable conditions.
68
Easy
68 of 90
Understanding
+4 | -1
Which one of the following are wrongly matched
View answer and explanation
Correct option: B
Water hyacinth – runner
Option B (Water hyacinth – runner) is wrongly matched because water hyacinth reproduces through offsets, not runners.
69
Medium
69 of 90
Remembering
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Male gametes are also called
View answer and explanation
Correct option: D
Both (1) and (2)
Option D (Both (1) and (2)) is correct because both "antherozoid" and "sperm" are terms used to refer to the male gamete.
70
Medium
70 of 90
Analyzing
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Read the following four statements (A-D).
A. The interflowering period in polycarpic plants is not the juvenile phase but is a part of the mature phase.
B. Gametes arise from diploid parent body only.
C. In Chara, egg is rich in proteins and starch only.
D. Reduction division has to occur if a haploid body has to produce haploid gametes.
How many of the above statements is/are correct?
A. The interflowering period in polycarpic plants is not the juvenile phase but is a part of the mature phase.
B. Gametes arise from diploid parent body only.
C. In Chara, egg is rich in proteins and starch only.
D. Reduction division has to occur if a haploid body has to produce haploid gametes.
How many of the above statements is/are correct?
View answer and explanation
Correct option: D
One
Option D (One) is correct because only statement A is correct. The interflowering period is part of the mature phase in polycarpic plants.
71
Easy
71 of 90
Remembering
+4 | -1
In yeast cell division results in a small cell called
View answer and explanation
Correct option: A
Bud
Option A (Bud) is correct because yeast reproduces asexually by budding, where a small outgrowth forms on the parent cell.
72
Easy
72 of 90
Remembering
+4 | -1
Which plant reproduce vegetatively by roots?
View answer and explanation
Correct option: D
sweet potato
Option D (sweet potato) is correct because sweet potatoes develop adventitious buds on their roots, which can grow into new plants.
73
Easy
73 of 90
Understanding
+4 | -1
In frog , chromosome number is reduced to half
View answer and explanation
Correct option: D
When 1st polar body is separated
Option D (When 1st polar body is separated) is correct because the chromosome number is reduced to half during meiosis I, which results in the formation of the first polar body.
74
Medium
74 of 90
Remembering
+4 | -1
The period from birth to natural death is called
View answer and explanation
Correct option: A
Life span
Option A is correct because the life span is defined as the period from birth to natural death of an organism.
75
Medium
75 of 90
Understanding
+4 | -1
Number of parents involved in asexual and usual sexual reproductions respectively?
View answer and explanation
Correct option: B
Option B () is correct because asexual reproduction involves one parent, while sexual reproduction usually involves two.
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76
Medium
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Understanding
+4 | -1
There is no natural death in single celled organisms like Amoeba and bacteria because
View answer and explanation
Correct option: C
Parental body is distributed among the offspring
Option C is correct because in single-celled organisms like Amoeba and bacteria, reproduction often occurs through binary fission, where the parental body divides and its components are distributed among the offspring, effectively eliminating the original parent cell through transformation.
77
Medium
77 of 90
Remembering
+4 | -1
In and, the moth lay egg into the
View answer and explanation
Correct option: A
Locule of ovary
Option A (Locule of ovary) is correct because the female moth deposits its eggs inside the locule of the ovary, ensuring the developing larvae have access to the developing seeds for food.
78
Medium
78 of 90
Analyzing
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Assertion: Algae and fish produce a large number of gametes.
Reason: They show internal fertilization.
Reason: They show internal fertilization.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because Algae and fish produce a large number of gametes, but they show external fertilization (mostly), not internal fertilization.
79
Hard
79 of 90
Remembering
+4 | -1
Regeneration by the transformation of already present body tissues is known as
View answer and explanation
Correct option: C
morphallaxis
Option C (morphallaxis) is correct because morphallaxis is regeneration that involves the remodeling of existing tissues to form a new organism or body part.
80
Easy
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Understanding
+4 | -1
Lifespan of an organism usually includes?
View answer and explanation
Correct option: D
All of these
Option D (All of these) is correct because the lifespan of an organism includes the juvenile phase, the reproductive (maturity) phase, and the senescence phase leading to death.
81
Easy
81 of 90
Understanding
+4 | -1
Select the wrong match.
View answer and explanation
Correct option: C
Plant - Dahlia, Vegetative propagule - Sucker
Option C (Plant - Dahlia, Vegetative propagule - Sucker) is the wrong match because Dahlia propagates through tubers, not suckers.
82
Medium
82 of 90
Understanding
+4 | -1
Which of the following statement support the view that elaborate sexual reproductive processes appeared much later in organic evolution?
I. Lower groups of organisms have complex body design
II. Asexual reproduction is common in lower groups
III. Asexual reproduction is common in higher groups of organisms
IV. High incidences of sexual reproduction are visible in angiosperms and vertebrates
I. Lower groups of organisms have complex body design
II. Asexual reproduction is common in lower groups
III. Asexual reproduction is common in higher groups of organisms
IV. High incidences of sexual reproduction are visible in angiosperms and vertebrates
View answer and explanation
Correct option: C
II and IV
Option C (II and IV) is correct because the prevalence of asexual reproduction in lower organisms and the high incidence of sexual reproduction in angiosperms and vertebrates suggest that elaborate sexual reproduction appeared later in evolution.
83
Medium
83 of 90
Understanding
+4 | -1
During embryogenesis the zygote undergoes
View answer and explanation
Correct option: D
1) followed by 3)
Option D (1) followed by 3)) is correct because during embryogenesis, the zygote undergoes cell division (mitosis) to increase cell number, followed by cell differentiation to form specialized tissues and organs.
84
Hard
84 of 90
Understanding
+4 | -1
Which one of the following statements is NOT correct?
View answer and explanation
Correct option: D
Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries
Option D (Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries) is NOT correct because algal blooms deplete oxygen and harm aquatic life, thus worsening water quality and harming fisheries.
85
Medium
85 of 90
Understanding
+4 | -1
Offsprings formed by sexual reproduction exhibit more variation than those formed by asexual reproduction because
View answer and explanation
Correct option: C
Genetic material comes from two parents of same species
Option C (Genetic material comes from two parents of same species) is correct because sexual reproduction involves the fusion of gametes from two parents, leading to genetic recombination and increased variation in offspring.
86
Medium
86 of 90
Understanding
+4 | -1
Clones are similar with their parents in?
View answer and explanation
Correct option: C
Both 1 and 2
Option C (Both 1 and 2) is correct because clones are genetically and morphologically identical to their parents.
87
Hard
87 of 90
Understanding
+4 | -1
The number of chromosomes in the shoot tip cells of maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be?
View answer and explanation
Correct option: A
20
Option A (20) is correct because the shoot tip cells and microspore mother cells are both diploid (2n), so they have the same number of chromosomes.
88
Medium
88 of 90
Remembering
+4 | -1
Bamboo species flower only in
View answer and explanation
Correct option: A
50-100 yrs
Option A (50-100 yrs) is correct because bamboo species are known to flower only once in their lifetime, typically within a range of 50 to 100 years.
89
Hard
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Understanding
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[A]: In Parthenogenesis, fertilized egg is stimulated to divide.
[R]: It is a type of reproduction through which animals are not able to eliminate non adaptive characters and sterility.
[R]: It is a type of reproduction through which animals are not able to eliminate non adaptive characters and sterility.
View answer and explanation
Correct option: D
Both A and R are false
Option D is correct because both the assertion and the reason are incorrect regarding parthenogenesis and its implications.
90
Medium
90 of 90
Remembering
+4 | -1
Terror of Bengal is
View answer and explanation
Correct option: C
Aquatic plant called water hyacinth
Option C is correct because water hyacinth is an aquatic plant that spreads rapidly and causes significant ecological damage, hence the name 'Terror of Bengal'.
Revision notes and key takeaways
Review REPRODUCTION IN ORGANISMS in your textbook or class notes, then use this set to check your understanding.
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