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In which of the following plants, sepals do not fall off after fertilisation and remain attached to the fruit?
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 10 of Quiz-1423 (Que-ID : 2828)
In which of the following plants, sepals do not fall off after fertilisation and remain attached to the fruit?
- brinjal
- cucumber
- papaya
- Bitter gourd
Ans → (a)brinjal
Explanation → brinjal sepals do not fall off after fertilisation and remain attached to the fruit
This question is taken from this post → Reproduction in organisms- (Class 12th Biology) Revision Test | MCQs For NEET - attemp/practice
More MCQs in - Reproduction in organisms- (Class 12th Biology) Revision Test | MCQs For NEET
Q. 1 of Quiz-1423 (Que-ID : 2819)
Which of the following groups is formed only of the hermaphrodite organisms?
- Earthworm, tapeworm, housefly, frog
- Earthworm, tapeworm, seahorse housefly
- Earthworm, leech, sponge, roundworm
- Earthworm, tapeworm, leech, sponge
Q. 2 of Quiz-1423 (Que-ID : 2820)
Which of the following options shows bisexual animals only?
- Amoeba, sponge, leech
- Sponge, cockroach, Amoeba
- Earthworm, sponge, leech
- Tapeworm, earthworm, honeybee
Q. 3 of Quiz-1423 (Que-ID : 2821)
Read the following statements and select the incorrect one.
- Cucurbits and coconuts are monoecious plants
- Papayas and date palms are dioecious plants.
- Leeches and tapeworms are bisexual animals.
- Sponges and coelenterates are unisexual animals
Q. 4 of Quiz-1423 (Que-ID : 2822)
Meiosis does not occur in
- asexually reproducing diploid individuals
- sexually reproducing haploid individuals
- sexually reproducing diploid individuals
- all of these.
Q. 5 of Quiz-1423 (Que-ID : 2823)
A diploid parent plant body produces ________ gametes and a haploid parent plant body produces ________gametes.
- diploid, haploid
- haploid, diploid
- diploid, diploid
- haploid, haploid
Q. 6 of Quiz-1423 (Que-ID : 2824)
Which of the following organisms has the highest number of chromosomes?
- Housefly
- Butterfly
- Ophioglossum
- Onion
Q. 7 of Quiz-1423 (Que-ID : 2825)
In maize, a meiocyte has 20 chromosomes. What will be the number of chromosomes in its somatic cell?
- 40
- 30
- 20
- 10
Q. 8 of Quiz-1423 (Que-ID : 2826)
If a butterfly has chromosome number 360 in its meiocyte (2n). What will be the chromosome number in its gametes?
- 190
- 380
- 95
- 760
Q. 9 of Quiz-1423 (Que-ID : 2827)
In flowering plants, both male and female gametes are non-motile. The method to bring them together for fertilisation is
- water
- air
- pollination
- apomixis
Q. 10 of Quiz-1423 (Que-ID : 2828)
In which of the following plants, sepals do not fall off after fertilisation and remain attached to the fruit?
- brinjal
- cucumber
- papaya
- Bitter gourd
Q. 11 of Quiz-1423 (Que-ID : 2829)
The wall of the ovary forms
- pericarp
- fruit wall
- fruit
- both (a) and (b).
Q. 12 of Quiz-1423 (Que-ID : 2830)
The term ‘clone’ cannot be applied to offspring formed by sexual reproduction because
- offspring do not possess exact copies of parental DNA
- DNA of only one parent is copied and passed on to the offspring
- offspring are formed at different times
- DNA of parent and offspring are completely different
Q. 13 of Quiz-1423 (Que-ID : 2831)
The male gametes of rice plant have 12 chromosomes in their nucleus. The chromosome number in the female gamete, zygote and the cells of the seedling will be, respectively
- 12, 24, 12
- 24, 12, 12
- 12, 24, 24
- 24, 12, 24
Q. 14 of Quiz-1423 (Que-ID : 2832)
Appearance of vegetative propagules from the nodes of plants such as sugarcane and ginger is mainly because
- nodes are shorter than intemodes
- nodes have meristematic cells
- nodes are located near the soil
- nodes have non-photosynthetic cells.
Q. 15 of Quiz-1423 (Que-ID : 2833)
There is no natural death in single celled organisms like Amoeba and bacteria because
- they cannot reproduce sexually
- they reproduce be binary fission
- parental body is distributed among the offspring
- they are microscopic.
Q. 16 of Quiz-1423 (Que-ID : 2834)
There are various types of reproduction. The type of reproduction adopted by an organism depends on
- the habitat and morphology of the organism
- morphology of the organism
- morphology and physiology of the organism
- the organisms habitat, physiology and genetic makeup.
Q. 17 of Quiz-1423 (Que-ID : 2835)
Which of the following is a post-fertilisation event in flowering plants?
- Transfer of pollen grains
- Embryo development
- Formation of flower
- Formation of pollen grains
Q. 18 of Quiz-1423 (Que-ID : 2836)
The number of chromosomes in the shoot tip cells of a maize plant is 20. The number of chromosomes in the microspore mother cells of the same plant shall be
- 20
- 10
- 40
- 15
Q. 19 of Quiz-1423 (Que-ID : 2837)
The growth phase of an organism before attaining sexual maturity is referred to as
- juvenile phase
- vegetative phase
- both (a) and (b)
- None of the above
Q. 20 of Quiz-1423 (Que-ID : 2838)
Select the monocarpic plant out of the following.
- Bamboo
- Litchi
- Mango
- all of these.
Q. 21 of Quiz-1423 (Que-ID : 2839)
Clear cut vegetative, reproductive and senescent phases cannot be observed in
- annual plants
- perennial plants
- biennial plants
- ephemeral plants.
Q. 22 of Quiz-1423 (Que-ID : 2840)
Strobilanthus kunthiana flowers once in
- 5 years
- 12 years
- 20 years
- 50 years
Q. 23 of Quiz-1423 (Que-ID : 2841)
Strobilanthus kunthiana differs from bamboo in
- being monocarpic
- length of juvenile phase
- being polycarpic
- none of these.
Q. 24 of Quiz-1423 (Que-ID : 2842)
Oestrous cycle is reported in
- cows and sheep
- humans and monkeys
- chimpanzees and gorillas
- none of these.
Q. 25 of Quiz-1423 (Que-ID : 2843)
Which of the following animals show menstrual cycle?
- Gorillas and chimpanzees
- Monkeys and humans
- Orangutans and monkeys
- All of these
More MCQs In - General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 18 of Quiz- (Que-ID : 3261)
Fluke infections are diseases of the _______ in humans
- Blood
- Bile
- Digestive tract
- Lung
Q. 22 of Quiz- (Que-ID : 2915)
Which of the following groups of cells in the male gonad, represent haploid cells ?
- Spermatogonial cells
- Germinal epithelial cells
- Secondary spermatocytes
- Primary spermatocytes
Q. 20 of Quiz- (Que-ID : 3463)
Submerged hydrophytes have disseced leaves for
- Decreasing surface area
- Increasing surface area
- Reducing effect pf water currents
- Increasing number of stomata
Q. 2 of Quiz- (Que-ID : 3370)
Which of the following is not used as a biopesticide ?
- Trichoderma harzianum
- Nucleopolyhedrovirus
- Xanthomonas campestris
- Bacillus thuringiensis
Q. 25 of Quiz- (Que-ID : 3218)
Vessels and companion cells are respectively present in the xylem and phloem of
- Gymnosperm
- Pteridophytes
- Angiosperm
- Bryophyta
Q. 20 of Quiz- (Que-ID : 3946)
Nitrogenous bases present in DNA
- Adenine, guanine, cytosine, uracil
- Adenine, guanine, cytosine, thymine
- Adenine, thymine, uracil
- Guanine, uracil
Q. 19 of Quiz- (Que-ID : 2988)
Angiotensinogen 2 is
- Vasoconstriction
- Vasodilation
- Both a and b
- None of the above
Q. 10 of Quiz- (Que-ID : 1587)
The process of breakdown of glycogen to blood glucose is … . .
- Gluconeogenesis
- Glycogenesis
- Thermogenesis
- Glycogenolysis
Q. 2 of Quiz- (Que-ID : 2920)
The characters which appear in the first filial generation are called
- recessive characters
- dominant characters
- holandric characters
- lethal characters
Q. 1 of Quiz- (Que-ID : 2944)
Which of the following statements is the most appropriate for sickle cell anaemia ?
- It cannot be treated with iron supplements.
- It is a molecular disease.
- It conferes resistance to acquiring malaria
- All of the above.
Q. 6 of Quiz- (Que-ID : 3224)
The largest petal overlaps the lateral ones in _________ aestivation.
- Papilionaceous
- Valvate
- Twisted
- Imbricate
Q. 3 of Quiz- (Que-ID : 3471)
Plant roots soil water is
- Cellular water
- Surface water
- Humidity water
- Gravitational water
Q. 16 of Quiz- (Que-ID : 3409)
Golden rice is a promising transgenic crop. When released for cultivation, it will help in :
- High lysin content
- Pest resistance
- High protien content
- High vitamin A content
Q. 24 of Quiz- (Que-ID : 2967)
Amino acids which are specified by single codons are
- phenylalanine and arginine
- tryptophan and methionine
- valine and proline
- methionine and aroinine
Q. 15 of Quiz- (Que-ID : 2984)
Which loop of hence is permeable to water
- Descending loop
- Ascending loop
- Both the loops
- None of the above
Q. 24 of Quiz- (Que-ID : 3467)
Animals have innate ability to escape from predation. Select the incorrect example:
- Colour change in Chameleon
- Enlargement of body by swallowing air in puffer fish
- Poison fangas of snakes
- Melaninin in moths
Q. 22 of Quiz- (Que-ID : 3040)
Growth regulator which induces parthenocarpy
- IAA
- ABA
- Cytokinin
- Ethylene
Q. 5 of Quiz- (Que-ID : 2923)
What is the probability of production of dwarf offsprings in a cross betweeen two heterozygous tall pea plants ?
- Zero
- 50%
- 25%
- 100%
Q. 14 of Quiz- (Que-ID : 2882)
In which of the following weeks of pregnancy CVS is done ?
- 12th – 14th week
- 8th – 10th week
- 5th – 7th week
- None of these
Q. 9 of Quiz- (Que-ID : 3452)
One species benefit in
- Parasitism
- Predation
- Mutualism
- Both (a) and (b)
Q. 18 of Quiz- (Que-ID : 2686)
How many times our heart beats in a minute
- 65-59
- 70-75
- 25-45
- None of the above
Q. 25 of Quiz- (Que-ID : 2793)
The taxonomic unit ?Phylum? in the classification of animals is equivalent to which hierarchical level in classification of plants?
- Class
- Order
- Family
- Division
Q. 23 of Quiz- (Que-ID : 3391)
Biogas is produced by
- aerobic breakdown of biomass
- anaerobic breakdown of biomass
- with the help of methanogenic bacteria
- both (b) and (c)
Q. 18 of Quiz- (Que-ID : 3111)
Which element is required for opening and closing of stomata?
- P
- K
- Ca
- Na
Q. 10 of Quiz- (Que-ID : 3003)
what type of plant is formed when colchicine is used in the process of development of Raphanobrassica?
- Autotetraploid
- Haploid
- Triploid
- Allotetraploid
Q. 15 of Quiz- (Que-ID : 2833)
There is no natural death in single celled organisms like Amoeba and bacteria because
- they cannot reproduce sexually
- they reproduce be binary fission
- parental body is distributed among the offspring
- they are microscopic.
Q. 25 of Quiz- (Que-ID : 3418)
Transgenic plants are develop by
- Introducing of foreign fenes
- Clone and genetically modified genes
- Genetic engineering
- Purified genes
Q. 16 of Quiz- (Que-ID : 2934)
The inheritance of flower colour in Antirrhinum (dog flower) is an example of
- incomplete dominance
- co-dominance
- multiple alleles
- linkage
Q. 6 of Quiz- (Que-ID : 3449)
Parasites that feed on the external surface of the host organism are called
- Ecto parasites
- Endo parasites
- Brood parasitism
- None of the above
Q. 19 of Quiz- (Que-ID : 3387)
Which of the following steps is taken by the Ministry of Environment and Forests to protect rivers from water pollition ?
- Ganga Action Plan
- Narmada Action Plan
- Yamuna Action Plan
- Both (a) and (c)
Q. 8 of Quiz- (Que-ID : 3026)
The stage of rapid cell division just after fertilization is
- Organogenesis
- Cleavage
- Gastrulation
- Growth
Q. 21 of Quiz- (Que-ID : 3164)
Metabolic intermediates found in living system which are essential for growth and life is called___________
- Saponins
- Tannins
- Secondary metabolite
- Primary metabolites
Q. 21 of Quiz- (Que-ID : 3439)
A technology which has found immense use in solving cases of disputed percentage is:
- Polymerase chain reaction
- DNA finger printing
- None of these
- Both (a) and (b)
Q. 6 of Quiz- (Que-ID : 3349)
Jaya and Ratna are the semi-dwarf varieties of
- wheat
- rice
- cowpea
- mustard
Q. 6 of Quiz- (Que-ID : 2674)
Plasma without clotting factor is known as
- sirum
- Serum
- Both a and b
- None of the above
Q. 13 of Quiz- (Que-ID : 2956)
To initiate translation, the wiRNA first bind to
- the smaller ribosomal sub-unit
- the larger ribosomal sub-unit
- the whole ribosome
- no such specificity exists
Q. 7 of Quiz- (Que-ID : 2850)
During microsporogenesis, meiosis occurs in
- endothecium
- microspore mother cells
- microspore tetrads
- pollen grains
Q. 12 of Quiz- (Que-ID : 2880)
Amminocentesis is a technique used to
- determine errors in amino acid metabolism in embryo
- pin point specific cardiac ailments in embryo
- determine any hereditary genetic abnormality in embryo
- all of these
Q. 22 of Quiz- (Que-ID : 3165)
Enormous diversity of protein molecules is due to
- R groups of amino acids
- Sequence of amino acids
- Peptide bonds
- Amino groups of amino acids
Q. 25 of Quiz- (Que-ID : 3093)
Which one of the following statements about cytochrome P-450 is wrong?
- It is a colored cell
- It is an enzyme involved in oxidation reaction
- It has an important role in metabolism
- It contains iron
Q. 12 of Quiz- (Que-ID : 3355)
Crossing of individuals of two different species to produce a hybrid is called
- interspecific hybridisation
- intervarietal hybridisation
- intergeneric hybridisation
- intravarietal hybrididisation
Q. 16 of Quiz- (Que-ID : 3509)
One of the ex situ conservation methods for endangered species is
- Wild life sanctuaries
- Biosphere reserves
- Cryopreservation
- National parks
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