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The anther wall consists of four wall layers where
General Science Biology Botany Class 12th NEET UG NEET UG Preparation
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
Ans → (b)middle layers lie between endothecium and tapetum
Explanation → middle layers lie between endothecium and tapetum
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. 18 of Quiz- (Que-ID : 3136)
When a plant is girdled (ringed)
- the root and shoot die at the same time
- the shoot dies first
- the root dies first
- neither root nor shoot will die
Q. 1 of Quiz- (Que-ID : 3294)
Which one of the following phenomena supports Darwin’s concept of natural selection in organic evolution ?
- Development of transgenic animals
- Production of “Dolly’, the sheep by cloning
- Prevalence of pesticide resistant insects
- Development of organs from ‘stem cells’ for organ transplantation.
Q. 14 of Quiz- (Que-ID : 3357)
Artificial breeding of cattle is brough about by
- artiticial insemination
- super ovulation and embryo transplantation
- MOET
- all of these
Q. 22 of Quiz- (Que-ID : 3390)
Process of biogas production is
- aerobic process
- anaerobic process
- active process
- passive process
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. 7 of Quiz- (Que-ID : 1584)
Energy yielding anaerobic breakdown of glucose yielding lactate, ethanol with some other products is… . ..
- Protein fermentation
- Fat metabolism
- Glucose fermentation
- Nucleic acid fermentation
Q. 18 of Quiz- (Que-ID : 2936)
What can be the blood group of offspring when both parents have AB blood group ?
- AB only
- A, B and AB
- A, B, AB and O
- A and B only
Q. 9 of Quiz- (Que-ID : 3277)
Isogamous condition with non-flagellated gametes is found in
- Chlamydomonas
- Spirogyra
- Volvox
- Fucus
Q. 5 of Quiz- (Que-ID : 3248)
Choose the correct pair.
- Hippocampus – 3-chambered heart
- Rana – 2-chambered heart
- Crocodilus – 4-chambered heart
- Pavo – 3-chambered heart
Q. 12 of Quiz- (Que-ID : 3155)
A protein having both structural and enzymatic traits is
- Collagen
- Trypsin
- Myosin
- Actin
Q. 15 of Quiz- (Que-ID : 2908)
In human adult females oxytocin
- stimulates pituitary to secrete vasopressin
- causes strong uterine contractions during parturition
- is secreted by anterior pituitary
- stimulates growth of mammary glands
Q. 22 of Quiz- (Que-ID : 3065)
Most of the energy of the carbohydrates is released by oxidation when
- Pyruvic acid is converted into CO2 and H2O
- Pyruvic acid is converted into acetyl Co-A
- Sugar is converted into pyruvic acid
- Glucose is converted into alcohol and CO2
Q. 16 of Quiz- (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. 23 of Quiz- (Que-ID : 2941)
Chromosomal theory of inheritance was given by
- Morgan et al
- Sutton and Boveri
- Hugo deVries
- Gregor J. Mendel
Q. 7 of Quiz- (Que-ID : 3450)
If one species is harmed whereas the other is unaffected is called
- Commensalism
- Amensalism
- Mutualism
- None of the above
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. 24 of Quiz- (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. 22 of Quiz- (Que-ID : 3490)
Which types of the following pyramid are never inverted?
- Pyramid of energy
- Pyramid of biomass
- Pyramid of number
- Pyramid of dry biomass
Q. 14 of Quiz- (Que-ID : 3182)
Spot the salivary gland in the following :
- sublingual
- adrenal
- Brunners
- lacrimal
Q. 12 of Quiz- (Que-ID : 3405)
In an experiment, recombinant DNA bearing ampicillin-resistance gene is transferred into E.coli cells. The host cells are then cultured on a medium containing ampicillin. The result will be
- both transformants and non-transformants cannot survive
- both transformants and non-transformants can survive.
- transformants only and not the non-transformants can survive
- transformants cannot survive, but non-transformants can not.
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. 17 of Quiz- (Que-ID : 3485)
During food chain the maximum energy is stored in
- Producers
- Decomposers
- Herbivoures
- Camivourse
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. 10 of Quiz- (Que-ID : 3078)
In actively gro – wing young plants, the best data for estimating the rate of photosynthesis would be
- ratio of oxygen evolved to carbon dioxide absorbed
- increase in fresh weight
- increase in dry weight
- increase in carbohydrate
Q. 18 of Quiz- (Que-ID : 3061)
Respiratory enzymes are located in
- mitochondrial matrix
- Cristae
- perimitochondrial space
- outer membrane
Q. 23 of Quiz- (Que-ID : 3366)
Which of the following is incorrectly matched ?
- Black rot of crucifers Bacteria
- Brown rust of wheat Fungi
- Late blight of potato Virus
- Red rot of sugarcane Fungi
Q. 20 of Quiz- (Que-ID : 3113)
NPK denotes
- Nitrogen, Protein, Kinetin
- Nitrogen, Protein, Potassium
- Nitrogen, Potassium, kinetin
- Nitrogen, Phosphorus, Potassium
Q. 4 of Quiz- (Que-ID : 2617)
The bile duct and pancreatic duct open together into which region of intestine
- Jejunum
- Ileum
- Duodenum
- Cardiac
Q. 18 of Quiz- (Que-ID : 2861)
Plants with ovaries having only one or a few ovules are generally pollinated by
- bees
- Butterflies
- birds
- Wind
Q. 9 of Quiz- (Que-ID : 3252)
Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
- Mammalia : give birth to young ones
- Reptilia : possess 3-chambered heart with one incompletely divided ventricle
- Chordata : possess a mouth provided with an upper and a lower jaw
- Chondrichthyes : possess cartilaginous endoskeleton
Q. 18 of Quiz- (Que-ID : 2861)
Plants with ovaries having only one or a few ovules are generally pollinated by
- bees
- Butterflies
- birds
- Wind
Q. 16 of Quiz- (Que-ID : 3084)
Kranz anatomy is a feature of
- C3 plants
- CAM plants
- C4 plants
- All of these
Q. 3 of Quiz- (Que-ID : 3071)
The primary carbon dioxide acceptor in C4 cycle is
- malic acid
- phosphoenol pyruvate
- rubisco
- aspartic acid
Q. 1 of Quiz- (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. 20 of Quiz- (Que-ID : 2938)
How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci ?
- 4
- 8
- 16
- 32
Q. 17 of Quiz- (Que-ID : 3535)
Common indicator organism of water pollution is
- Lemna pancicostata
- Eichhomia crassipes
- Escherichia coli
- Entamoeba histolytica
Q. 17 of Quiz- (Que-ID : 2885)
Which of the following is correct regarding the consequences of lower population ?
- It increases the poverty of a country
- It leads to shortage of food supply
- It results in unemployment
- All of these
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. 12 of Quiz- (Que-ID : 3130)
Water is lost in a liquid state in some plants through hydathodes. These hydathodes
- do not show any specificity in opening and closing
- remain closed during day
- remain closed at night
- remain always open
Q. 3 of Quiz- (Que-ID : 3296)
The presence of gill slits, in the embryos of vertebrates, supports the theory of
- metamorphosis
- biogenesis
- organic evolution
- recapitulation
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