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Xerophyte Contains
General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 7 of Quiz-1471 (Que-ID : 3475)
Xerophyte Contains
- Deep roots
- Sunken stomata
- Thick cuticle
- All of these
Ans → (d)All of these
Explanation →
This question is taken from this post → Ecosystem : Biology (Class 12th) Revision test | MCQs for NEET - attemp/practice
More MCQs in - Ecosystem : Biology (Class 12th) Revision test | MCQs for NEET
Q. 2 of Quiz-1471 (Que-ID : 3470)
Soil particle determine the character of
- Organisation
- Biomass
- Area capacity
- Soil plants
Q. 3 of Quiz-1471 (Que-ID : 3471)
Plant roots soil water is
- Cellular water
- Surface water
- Humidity water
- Gravitational water
Q. 4 of Quiz-1471 (Que-ID : 3472)
Exchange of water in submerged plant
- Stomata
- Normal surface
- Hydathode
- Lenticel
Q. 5 of Quiz-1471 (Que-ID : 3473)
Submerged Rooted Hydrophyte are:
- Uticularia
- Prapa
- Nymphea
- vallisnaria
Q. 6 of Quiz-1471 (Que-ID : 3474)
Water co-deficient contains:
- Large thin walled cells
- Large-vacuoles
- Membrane
- All of these
Q. 7 of Quiz-1471 (Que-ID : 3475)
Xerophyte Contains
- Deep roots
- Sunken stomata
- Thick cuticle
- All of these
Q. 8 of Quiz-1471 (Que-ID : 3476)
Small extremite animals of tropical region
- Allen’s law
- Bergmen’s law
- Dollo’s law
- Cope’s law
Q. 10 of Quiz-1471 (Que-ID : 3478)
Physical and chemical properties of soil studied by
- Climatic factor
- Biotic factor
- Soil factor
- Topographic factor
Q. 11 of Quiz-1471 (Que-ID : 3479)
Identity the Hetero Organism
- Pistia
- Hydrilla
- Vallisnaria
- Casurina
Q. 12 of Quiz-1471 (Que-ID : 3480)
That animal who can bear one third loss of water of one third body weight is
- Necturus
- Camel
- Wall Lizzard
- Kyton
Q. 16 of Quiz-1471 (Que-ID : 3484)
Kanha National Park is famous for
- For Birds
- For Tendua
- For Tiger
- For Crocodile
Q. 17 of Quiz-1471 (Que-ID : 3485)
During food chain the maximum energy is stored in
- Producers
- Decomposers
- Herbivoures
- Camivourse
Q. 18 of Quiz-1471 (Que-ID : 3486)
The average efficiency of energy transfer from herbivoure to carnivorce level is
- 5%
- 10%
- 20%
- 30%
Q. 19 of Quiz-1471 (Que-ID : 3487)
Ecological pyramids were first devised by
- Charles Eltom
- R. Hesse
- R.A. Lindemann
- Justus von Liebig
Q. 20 of Quiz-1471 (Que-ID : 3488)
Which of the following ecosystem has highest gross primary productivity
- Grassland
- Coral reefs
- Mangrooves
- Rainforests
Q. 21 of Quiz-1471 (Que-ID : 3489)
In the phosphorus cycle, weathring makes phosophate available first to
- Producers
- Decomposers
- Consumers
- None of these
Q. 22 of Quiz-1471 (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. 23 of Quiz-1471 (Que-ID : 3491)
Biosphere means
- Atmosphere
- Lithosphere and ionosphered
- Atmosphere, lithosphere and hydrosphere
- Hydrosphere lithosphere and ionsophere
Q. 24 of Quiz-1471 (Que-ID : 3492)
Best type of pyramid which is always true is:
- Pyramid or energy
- Pyramid of Biomass
- Pyramid of number
- Both (a) and (c)
Q. 25 of Quiz-1471 (Que-ID : 3493)
decomposers are
- Autotrophs
- Autohetrotrophs
- Organotrophs
- Heterotrophs
More MCQs In - General Science Biology Zoology Class 12th NEET UG NEET UG Preparation
Q. 4 of Quiz- (Que-ID : 3472)
Exchange of water in submerged plant
- Stomata
- Normal surface
- Hydathode
- Lenticel
Q. 19 of Quiz- (Que-ID : 2812)
Find the odd one.
- Schwann cells
- Nissl s granules
- nephrons
- synaptic knob
Q. 20 of Quiz- (Que-ID : 3388)
Methanogens, growing anaerobically on cellulosic material produce
- methane
- methane and carbon dioxide
- methane and hydrogen
- methane, carbon dioxide and hydrogen
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. 8 of Quiz- (Que-ID : 2876)
From the sexually transmitted diseases mentioned below, identify the one which does not specifically affect the sex organs
- Syphilis
- AIDS
- Gonorrhea
- Genital warts
Q. 3 of Quiz- (Que-ID : 2871)
Confirmatory test for STDs is
- ELISA
- PCR
- DNA hybridisation
- all of these
Q. 11 of Quiz- (Que-ID : 2804)
Which one of the following is the correct statement regarding the particular psychotropic drug specified?
- Barbiturates cause relaxation and temporary euphoria
- Hashish causes after thought perceptions and hallucinations
- Opium stimulates nervous system and causes hallucinations
- Morphine leads to delusions and disturbed emotions
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. 19 of Quiz- (Que-ID : 3412)
Plasmid is a
- Fungus
- Plasmid
- Part of Plasma membrane
- Extra chromosomal DNA in bacterial cell
Q. 15 of Quiz- (Que-ID : 3058)
A characteristic of drupe is
- fleshy seed coat
- stony pericarp
- stony mesocarp
- stony endocarp
Q. 4 of Quiz- (Que-ID : 3047)
Which enzyme catalyses the reaction below? Pyruvic acid → Carbon dioxide + Ethanol
- Pyruvic acid decarboxylase
- Alcohol dehydrogenase
- None of these
- Both of these
Q. 21 of Quiz- (Que-ID : 3289)
In chlorophyta the mode of sexual reproduction is
- Isogamy
- Anisogamy
- Oogamy
- Isogamy, Anisogamy and oogamy
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. 14 of Quiz- (Que-ID : 3282)
In gymnosperms, the development of pollen grains occurs in
- Strobili
- Microsporangia
- Megasporangia
- Macrosporangia
Q. 8 of Quiz- (Que-ID : 3126)
Diffusion rate is affected by
- temperature
- membrane permeability
- gradient of concentration
- all of these
Q. 21 of Quiz- (Que-ID : 2889)
Which of the following is correct regarding HIV, hepatitis B, gonorrhoea, trichomoniasis ?
- Trichomoniasis is an STD whereas others are not.
- Gonorrhoea is a viral disease whereas others are bacterial
- HIV is a pathogen whereas others are diseases
- Hepatitis B is eradicated completely whereas others are not
Q. 6 of Quiz- (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. 22 of Quiz- (Que-ID : 3465)
Animals undergo inactive stage during winters. It is called
- Acclimatisation
- Hibernation
- Aestivation
- Adapatation
Q. 17 of Quiz- (Que-ID : 3535)
Common indicator organism of water pollution is
- Lemna pancicostata
- Eichhomia crassipes
- Escherichia coli
- Entamoeba histolytica
Q. 9 of Quiz- (Que-ID : 2877)
Condoms are one of the most popular contraceptives because of the following reasons.
- These are effective barriers for insemination
- They do not interfere with coital act
- These help in reducing the risk of STDs
- All of the above
Q. 1 of Quiz- (Que-ID : 2919)
A recessive allele is expressed in
- heterozygous condition only
- homozygous condition only
- F3 generation
- both homozygous and heterozygous conditions.
Q. 16 of Quiz- (Que-ID : 3359)
Multiple ovulation embryo transfer technology is related to
- transfer of super embryo
- transfer of super eggs
- super ovulation and embryo transfer
- both (a) and (b)
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. 10 of Quiz- (Que-ID : 2753)
Choose the incorrect statement
- Hormones are non-nutrients chemicals
- Exocrine glands are ductless glands
- Invertebrates have simple endocrine system
- All of the above statements are incorrect
Q. 22 of Quiz- (Que-ID : 3090)
In the half-leaf experiment of photosynthesis, KOH solution is used because
- It provides O2 to the leaf.
- It provides moisture to the leaf.
- t helps in CO2 fixation
- It absorbs CO2
Q. 8 of Quiz- (Que-ID : 3426)
In a Transgenic crop gene is for the following:
- New protein synthesis
- Resistance from Antibiotics
- In the formation enzyme for Antibiotics
- All of these
Q. 20 of Quiz- (Que-ID : 3163)
Nitrogenous bases present in DNA
- Adenine, guanine, cytosine, uracil
- Adenine, guanine, cytosine, thymine
- Adenine, thymine, uracil
- Guanine, uracil
Q. 15 of Quiz- (Que-ID : 3008)
Which of the following cellular structures always disappears during mitosis and meiosis?
- Plasma membrane
- Nucleolus and nuclear envelope
- Plastids
- none of these
Q. 5 of Quiz- (Que-ID : 2748)
Chemical name of T4 is
- Tetradiodothyronine
- Tridiodothyronine
- Tetraiodothyronine
- Triiodothyronine
Q. 18 of Quiz- (Que-ID : 3336)
The term ‘antitoxin’ refers to a preparation containing
- B-lymphoctyes and T-lymphocytes
- antibodies to the toxin
- weakend pathogen
- inactivated T-lymphocytes.
Q. 3 of Quiz- (Que-ID : 2921)
What will be the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus ?
- 3:01
- 1:02:01
- 1:01
- None of the above
Q. 5 of Quiz- (Que-ID : 2873)
Which of the following STDs are not completely curable ?
- Chlamydiasis, gonorrhoea, trichomoniasis
- Chancroid syphilis, genital warts
- AIDS, syphilis, hepatitis B
- AIDS, genital herpes, hepatitis B
Q. 22 of Quiz- (Que-ID : 2635)
Enamel is originated from which cell
- Amiloblast cell
- Odontioblast cell
- Chief cell
- Peptic cell
Q. 7 of Quiz- (Que-ID : 2925)
Which of the following is incorrect regarding ZW – ZZ type of sex determination ?
- It occurs in birds and some reptiles.
- Females are homogametic and males are heterogametic.
- 1:1 sex ratio is produced in the offsprings
- All of these
Q. 20 of Quiz- (Que-ID : 3263)
Order Rhynchocephalia consists of
- Tuataras
- Lizards and snakes
- Turtles and tortoises
- Crocodiles, alligators, caimans
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. 4 of Quiz- (Que-ID : 3097)
The process of conversion of NO2– to N2 is called
- nitrification
- ammonification
- denitrification
- nitrogen fixation
Q. 7 of Quiz- (Que-ID : 3250)
Which of the following statement is correct?
- Platypus lays eggs
- Camels have biconcave RBCs
- Whales respire by gills
- Bats do not fly
Q. 14 of Quiz- (Que-ID : 2807)
Which of the following is not related to the autonomic nervous system?
- Peristalsis
- Digestion
- Excretion
- Memory and learning
Q. 17 of Quiz- (Que-ID : 3485)
During food chain the maximum energy is stored in
- Producers
- Decomposers
- Herbivoures
- Camivourse
Q. 19 of Quiz- (Que-ID : 3512)
Which one of the following pairs of geographical areas show maximum biodiversity in our country?
- Sunderbans and Rann of Kutch
- Eastern Ghats and West Bengal
- Eastern Himalayas and Western Ghats
- Kerala and Punjab
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