Botany Multiple Choice Questions Answers MCQs Practice Test for PSC CSC Exams

Botany Multiple Choice Questions Answers MCQs Practice Test for PSC CSC Exams

(1) NADH from the Krebs cycle is approximately equal to:
(a) 2 ATP
(b) 3 ATP
(c) 4 ATP
(d) 6 ATP
(e) None of these

(2) In mitochondrial electron transport chains, the final c acceptor is:
(a) H2O
(b) H2O2
(c) NAD+
(d) FAD
(e) None of these

(3) The movement of water from cell to cell via plasmadesmata is called:
(a) Symplastic
(b) Transmembrane
(c) Apoplastic
(d) Facilitated
(e) None of these

(4) In maize plant, the CO2 fixation mechanism is called:
(a) C3 pathway
(b) C4 pathway
(c) CAM pathway
(d) C3 – C4 intermediate
(e) None of these

(5. Salt-loving plants are known as:
(a) Glycophytes
(b) Halophytes
(c) Xerophytes
(d) Mesophytes
(e) None of these

(6. With the addition of solution to a liquid system, the water potential of the system:
(a) Increases
(b) Decreases
(c) Remains stable
(d) Remains variable
(e) None of these

(7) The conversion of pyruvate into acetyl C0. A is called:
(a) Glycolysis
(b) Fermentation
(c) Oxidative carboxylation
(d) B-Oxidation
(e) None of these

(8) Between adenine and thymine, there are:
(a) Two hydrogen bonds
(b) 3 hydrogen bonds
(c) One hydrogen bond
(d) 4 hydrogen bonds
(e) None of these

(9) The stage of meiosis in which pairing of homologous chromosomes starts is called:
(a) Leptotene
(b) Zygotene
(c) Diplotene
(d) Pachytene
(e) None of these

(10) The site of chromosome on which a gene is located is called:
(a) Allele
(b) Locus
(c) Site
(d) Trait
(e) None of these

(11) In a dihybrid cross, the ratio of F2 generation is:
(a) 9:3:3:1
(b) 3:1
(c) 1:2:1
(d) 1:1
(e) None of these

(12) When a single gene has multiple effects, the phenomenon is called:
(a) Codominance
(b) Epistasis
(c) Pleiotropy
(d) Genostasis
(e) None of these

(13) Lamarck’s theory of evolution was published in:
(a) 1807
(b) 1808
(c) 1809
(d) 1810
(e) None of these

(14) The book “Origin of Species” was written by:
(a) Linnaeus
(b) Lamarck
(c) Mendel
(d) Darwin
(e) None of these

(15) The interaction between algae and fungi to form lichen is called:
(a) Parasitism
(b) Mutalism
(c) Commensalism
(d) Amensalism
(e) None of these

(16) The actual location or place where an organism lives is called:
(a) Habitat
(b) Ecosystem
(c) Niche
(d) Biome
(e) None of these

(17) Which of the biomes has been increased in area by human activities?
(a) Savanna
(b) Grassland
(c) Desert
(d) Coniferous forest
(e) None of these

(18) Which zone of the lake ecosystem consists of phyto-and zoo-planktons?
(a) Littoral zone
(b) Limnetic zone
(c) Profundal zone
(d) Water deep layers
(e) None of these

(19) Which of the following is a biotic component of an ecosystem?
(a) Producers
(b) Consumers
(c) Decomposers
(d) All of these
(e) None of these

(20) A sequence of changes in the community structure of an ecosystem over a period of time is called:
(a) Natural selection
(b) Succession
(c) Neo-Darwinism
(d) Lamarckism
(e) None of thes

Zoology Multiple Choice Questions Answers Quiz gk MCQs Practice Test Prepare

Zoology Multiple Choice Questions Answers Quiz gk MCQs Practice Test Prepare

1) The autonomic nervous system comprises of:
(a) Sympathetic nervous system
(b) Para-sympathetic nervous system
(c) Both (a) and (b)
(d) None of these

(c) Both (a) and (b)

(2) In Turtles, the dorsal plate is known as:
(a) carapace
(b) Plastron
(c) scutes
(d) None of these

(a) carapace

(3) The odd-toed ungulates are termed as:
(a) Perissodactyls
(b) Artiodactyls
(c) Paradactyls
(d) All of these

(a) Perissodactyls

(4) The functional kidney of adult fishes is:
(a) Pronephros
(b) Mesonephros
(c) Metanephros
(d) None of these

(a) Pronephros

(5) The telencephalon & diencephalons are part of:
(a) Mid-brain
(b) Hind brain
(c) Fore brain
(d) All of these

(c) Fore brain

(6) The sense organs of taste in tongue are known as:
(a) Olfactoreceptors
(b) Gustatoreceptors
(c) cutaneous receptors
(d) All of these

(b) Gustatoreceptors

(7) The process of cartilage formation is known as:
(a) chondrioblasts
(b) Chondriocytosis
(c) chondriogenesis
(d) None of these

(c) chondriogenesis

(8) Significant flight muscles in birds is:
(a) Pectoral
(b) Appendicular
(c) Tensor
(d) All of these

(a) Pectoral

(9) Typical character of a mammal is:
(a) Hairs
(b) Mammary glands
(c) Only (a)
(d) Both (a) and (b)

(d) Both (a) and (b)

(10) Body wall of obelia is:
(a) Monoblastic
(b) Diploblastic
(c) Triploblastic
(d) None of these

(b) Diploblastic

(11) The arrangement of the organs of an animal in a series of similar units along the longitudinal axis of the body is called:
(a) Pseudometamerism
(b) Parametamerism
(c) Metamerism
(d) Prometamerism

(c) Metamerism

(12) The white blood corpuscles of the cockroach are called as:
(a) Haematocyte
(b) Haematoclast
(c) Haemoblast
(d) Leucocyte

(a) Haematocyte

(13) Hormone which control molting in insects is:
(a) cardisone
(b) ecdysone
(c) ecdycortisone
(d) None of these

(b) ecdysone

(14) In Sycon water leave the sponge through:
(a) ostia
(b) osculum
(c) Madriporite
(d) All of these

(b) osculum

(15) Flame cells are commonly found in:
(a) Platyhelminthes
(b) Annelida
(c) Coelenterata
(d) All of these

(a) Platyhelminthes

(16) The number of vertebrae in horse neck are:
(a) 5
(b) 6
(c) 7
(d) 10

(c) 7

(17) The group in which RBC’s are mostly non-nucleated:
(a) Amphibians
(b) Birds
(c) Mammals
(d) All of these

(c) Mammals

(18) Cockroach is dissected from side:
(a) dorsal
(b) ventral
(c) Lateral
(d) Both (a) and (b)

(a) dorsal

(19) Heart of fish is:
(a) Open
(b) Single circuit
(c) Double circuit
(d) Both (b) and (c)

(b) Single circuit

(20) Round worms belong to:
(a) Platyhelminthes
(b) Annelida
(c) Centipedesa
(d) None of these

(d) None of these