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Spiny or sticky pollen grains and large, attractively coloured flowers are associated with
General Science Biology Botany Class 12th NEET UG NEET UG Preparation
Q. 16 of Quiz-1424 (Que-ID : 2859)
Spiny or sticky pollen grains and large, attractively coloured flowers are associated with
- hydrophily
- entomophily
- ornithophily
- anemophily
Ans → (b)entomophily
Explanation → entomophily involves insects.
This question is taken from this post → Sexual Reproduction in Flowering Plants - Class 12th Biology Practice Test| MCQs For NEET - attemp/practice
More MCQs in - Sexual Reproduction in Flowering Plants - Class 12th Biology Practice Test| MCQs For NEET
Q. 1 of Quiz-1424 (Que-ID : 2844)
The anther wall consists of four wall layers where
- tapetum lies just inner to endothecium
- middle layers lie between endothecium and tapetum
- endothecium lies inner to middle layers
- tapetum lies next to epidermis
Q. 2 of Quiz-1424 (Que-ID : 2845)
Anther is generally
- monosporangiate
- bisporangiate
- tetrasporangiate
- trisporangiate.
Q. 3 of Quiz-1424 (Que-ID : 2846)
The stamens represent
- microsporangia
- male gametophyte
- male gametes
- microsporophylls.
Q. 4 of Quiz-1424 (Que-ID : 2847)
Nonessential floral organs in a flower are
- sepals and petals
- anther and ovary
- stigma and filament
- petals only.
Q. 5 of Quiz-1424 (Que-ID : 2848)
Science of cultivation, breeding, marketing and arrangement of flowers is called
- arboriculture
- floriculture
- horticulture
- anthology
Q. 6 of Quiz-1424 (Que-ID : 2849)
From among the sets of terms given below, identify those that are associated with the gynoecium
- Stigma, ovule, embryo sac, placenta
- Thalamus, pistil, style, ovule
- Ovule, ovary, embryo sac, tapetum
- Ovule, stamen, ovary, embryo sac
Q. 7 of Quiz-1424 (Que-ID : 2850)
During microsporogenesis, meiosis occurs in
- endothecium
- microspore mother cells
- microspore tetrads
- pollen grains
Q. 8 of Quiz-1424 (Que-ID : 2851)
The outermost and innermost wall layers of microsporangium in an anther are respectively
- endothecium and tapetum
- epidermis and endodermis
- epidermis and middle layer
- epidermis and tapetum.
Q. 9 of Quiz-1424 (Que-ID : 2852)
Embryo sac is to ovule as _______ is to an anther.
- Stamen
- filament
- pollen grain
- androecium
Q. 10 of Quiz-1424 (Que-ID : 2853)
An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as
- apospory
- apogamy
- parthenogenesis
- parthenocarpy
Q. 12 of Quiz-1424 (Que-ID : 2855)
Indentify the wrong statement regarding post-fertilisation development
- The ovary wall develops into pericarp.
- The outer integument of ovule develops into tegmen
- The fusion nucleus (triple nucleus) develops into endosperm.
- The ovule develops into seed.
Q. 13 of Quiz-1424 (Que-ID : 2856)
Persistent nucellus is called as _______ and is found in _______.
- perisperm, black pepper
- perisperm, groundnut
- endosperm, black pepper
- endosperm groundnut
Q. 14 of Quiz-1424 (Que-ID : 2857)
In albuminous seeds, food is stored in _______ and in non albuminous seeds, it is stored in _______
- endosperm, cotyledons
- cotyledons, endosperm
- nucellus, cotyledons
- endosperm, radicle
Q. 15 of Quiz-1424 (Que-ID : 2858)
Endospermic seeds are found in
- castor
- barley
- Coconut
- All of these
Q. 16 of Quiz-1424 (Que-ID : 2859)
Spiny or sticky pollen grains and large, attractively coloured flowers are associated with
- hydrophily
- entomophily
- ornithophily
- anemophily
Q. 17 of Quiz-1424 (Que-ID : 2860)
Which of the following is not a water pollinated plant ?
- Zostera
- Vallisneria
- Hydrilla
- Cannabis
Q. 18 of Quiz-1424 (Que-ID : 2861)
Plants with ovaries having only one or a few ovules are generally pollinated by
- bees
- Butterflies
- birds
- Wind
Q. 20 of Quiz-1424 (Que-ID : 2863)
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in
- papaya
- bottle gourd
- maize
- all of these.
Q. 21 of Quiz-1424 (Que-ID : 2864)
Even in absence of pollinating agents seed-setting is assured in
- Commelina
- Zostera
- Salvia
- Fig
Q. 22 of Quiz-1424 (Que-ID : 2865)
Both chasmogamous and cleistogamous flowers are present in
- Helianthus
- Commelina
- Rosa
- Gossypium
Q. 23 of Quiz-1424 (Que-ID : 2866)
Polygonum type of embryo sac is
- 8 – nucleate, 7 – celled
- 8 – nucleate, 8 – celled
- 7 – nucleate, 7 – celled
- 4 – nucleate, 3 – celled
Q. 24 of Quiz-1424 (Que-ID : 2867)
The female gametophyte of a typical dicot at the time of fertilisation is
- 8 – celled
- 7 – celled
- 6 – celled
- 5 – celled
Q. 25 of Quiz-1424 (Que-ID : 2868)
What is the function of filiform apparatus in an angiospermic embryo sac?
- Brings about opening of the pollen tube
- Guides the pollen tube into a synergid
- Prevents entry of more than one pollen tube into a synergid
- None of these
More MCQs In - General Science Biology Botany Class 12th NEET UG NEET UG Preparation
Q. 7 of Quiz- (Que-ID : 2950)
Which was the last human chromosome to be completely sequenced ?
- Chromosome 1
- Chromosome 11
- Chromosome 21
- Chromosome X
Q. 11 of Quiz- (Que-ID : 2729)
name of agaricus fruiting body
- Fairy rings
- Cleistothecium
- Basidocarp
- Asciocarp
Q. 1 of Quiz- (Que-ID : 2719)
In five kingdom classification chlamydomonas and chlorella falls under
- Algae
- Plantae
- Monera
- Protista
Q. 11 of Quiz- (Que-ID : 3329)
Humoral immunity is associated with
- T-cells
- B-cells
- macrophages
- both (a) and (b)
Q. 12 of Quiz- (Que-ID : 3080)
Translocation of sugar in flowering plants occurs in the form of
- glucose
- sucrose
- starch
- maltose
Q. 19 of Quiz- (Que-ID : 3187)
Which of the following helps in locomotion of earthworms?
- Clitellum
- Setae
- Intersegmental grooves
- Nephridiophores
Q. 15 of Quiz- (Que-ID : 3283)
Ribbon shaped chloroplasts occur in
- Ulothrix
- Spirogyra
- Chlamydomonas
- Riccia
Q. 16 of Quiz- (Que-ID : 3034)
Which plant growth regulator is the derivative of carotenoids?
- Auxin
- Gibberelic acid
- Cytokinin
- Abscisic acid
Q. 15 of Quiz- (Que-ID : 3533)
A mutagenic pollutant is:
- Organophosphate
- Resines
- Hydrocarbons
- Nitrogen oxides
Q. 5 of Quiz- (Que-ID : 3448)
Parasites that live inside the host body at different sities are called
- Ecto parasites
- Endo parasites
- Brood parasitism
- None of the above
Q. 11 of Quiz- (Que-ID : 2754)
Endemic goitre is a state of
- Increased thyroid function
- Normal thyroid function
- Decreased thyroid function
- Moderate thyroid function
Q. 18 of Quiz- (Que-ID : 3261)
Fluke infections are diseases of the _______ in humans
- Blood
- Bile
- Digestive tract
- Lung
Q. 9 of Quiz- (Que-ID : 3052)
Out of 36 ATP molecules produced per glucose molecule during respiration
- 2 are produced outside glycolysis and 34 during repiratory chain
- 2 are produced outside mitochondria and 34 inside the mitochondria
- all the formed inside mitochondria
- 2 during glycolysis and 34 during kreds cycle
Q. 12 of Quiz- (Que-ID : 3105)
Which one of the following is not a micronutrient?
- Magnesium
- Molybdenum
- Boron
- Zinc
Q. 10 of Quiz- (Que-ID : 2653)
What is the inspiratory reserve volume
- 2500-3000 ml
- 500 ml
- 1000-1100 ml
- None of the above
Q. 5 of Quiz- (Que-ID : 3173)
Which one of the four parts mentioned below is not part of a single uriniferous tubule ?
- Bowman scapsule
- Loop of Henle
- Distal convoluted tubule
- Collecting ducts
Q. 6 of Quiz- (Que-ID : 3374)
Biofertilisers are
- some bacteria and cyanobacteria
- fertilisers formed by ploughing in barseem
- fertilisers obtained by decay of dead organisms
- fertilisers prepared by mixing cattle dung with crop residues
Q. 9 of Quiz- (Que-ID : 3052)
Out of 36 ATP molecules produced per glucose molecule during respiration
- 2 are produced outside glycolysis and 34 during repiratory chain
- 2 are produced outside mitochondria and 34 inside the mitochondria
- all the formed inside mitochondria
- 2 during glycolysis and 34 during kreds cycle
Q. 6 of Quiz- (Que-ID : 3524)
Bhopal gas tragedy of 1884 took place because methyl isocyanate reacted with
- DDT
- Ammonia
- CO2
- Water
Q. 20 of Quiz- (Que-ID : 2963)
Histone proteins are
- basic, negatively charged
- basic, positively charged
- acidic, positively charged
- acidic, negatively charged
Q. 24 of Quiz- (Que-ID : 3317)
The primate which existed 15 mya was
- Homo habilis
- Australopithecus
- Ramapithecus
- Homo erectus
Q. 10 of Quiz- (Que-ID : 3403)
Restriction’ in Restriction enzyme refers to
- cleaving ofphosphodiester bond in DNA by the enzyme
- cutting of DNA at specific position only
- prevention of the multiplication of bacteriophage in bacteria
- all of the above
Q. 17 of Quiz- (Que-ID : 2910)
spot the odd one out from the following structures with reference to the male reproductive system
- Rate testis
- Epididymis
- Vasa efferentia
- Isthmus
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 : 3530)
Which one of the following is not a greenhouse gas?
- Methane
- CO2
- Chlorofluoro carbon
- Hydrogen
Q. 22 of Quiz- (Que-ID : 3040)
Growth regulator which induces parthenocarpy
- IAA
- ABA
- Cytokinin
- Ethylene
Q. 15 of Quiz- (Que-ID : 3083)
Which one of the following statement is true for ATP?
- ATP is prosthetic part of an enzyme
- ATP is an enzyme
- ATP is organic ions of enzyme
- ATP is a Co-enzyme
Q. 7 of Quiz- (Que-ID : 3075)
Oxidative phosphorylation refers to
- Anaerobic production of ATP
- The citric acid cycle production of ATP
- Production of ATP by chemiosmosis
- Alcoholic fermentation
Q. 21 of Quiz- (Que-ID : 2689)
What does P wave indicate
- Depolarisation of atria
- repolarisation
- Depolarisation of ventricle
- None of the above
Q. 3 of Quiz- (Que-ID : 2896)
Immediately after ovulation, the mammalian egg is covered by a membrane known as
- chorion
- zona pellucida
- corona radiata
- vitelline membrane.
Q. 6 of Quiz- (Que-ID : 3099)
Manganese toxicity leads to deficiency of
- iron
- calcium
- magnesium
- all of the above
Q. 17 of Quiz- (Que-ID : 2860)
Which of the following is not a water pollinated plant ?
- Zostera
- Vallisneria
- Hydrilla
- Cannabis
Q. 13 of Quiz- (Que-ID : 2681)
Which among the following plays imp role in clotting
- mg2+
- Ca2+
- Na+
- Mn2+
Q. 18 of Quiz- (Que-ID : 3236)
Blue dye is obtained from the leaves of
- Indigofera tinctoria
- Opium
- Aloe
- Delbergia sissoo
Q. 2 of Quiz- (Que-ID : 3270)
Which of the followings plant material is an efficient water imbibant?
- Agar
- Cellulose
- Lignin
- Pectin
Q. 7 of Quiz- (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. 18 of Quiz- (Que-ID : 2961)
How far is each base pair from the next one in DNA double helix model ?
- 2 nm
- 3.4 nm
- 34 nm
- 0.34 nm
Q. 4 of Quiz- (Que-ID : 3272)
The seedless vascular plants whose sporophytes are larger than their small and independent gametophytes are
- Pteridophytes
- Angiosperms
- Gymnosperms
- None of these
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. 23 of Quiz- (Que-ID : 3491)
Biosphere means
- Atmosphere
- Lithosphere and ionosphered
- Atmosphere, lithosphere and hydrosphere
- Hydrosphere lithosphere and ionsophere
Q. 8 of Quiz- (Que-ID : 2751)
Glucagon hormone is secreted by
- Thyroid gland
- Pituitary
- Adrenal
- Pancreas
Q. 8 of Quiz- (Que-ID : 3001)
Arrange the following events of meiosis in the correct sequence: I. Terminalization II. Crossing over III. Synapsis IV. Disjunction of genomes The correct sequences
- II, I, IV, III
- III, II, I, IV
- IV, III, II, I
- I, IV, III, II
Q. 23 of Quiz- (Que-ID : 3141)
What is the effect of turgor pressure in Munch hypothesis?
- Increase of turgor pressure
- Decrease of turgor pressure
- No change in turgor pressure
- independent to water potential gradient
Q. 9 of Quiz- (Que-ID : 3352)
The breeding carried out between animals of different breeds is called
- out-crossing
- cross-breeding
- inbreeding
- both (a) and (b)
Q. 21 of Quiz- (Que-ID : 3414)
DNA obtained for DNA finger printing:
- W.B.C
- Hair root cells
- Body fluids
- None of these
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