NEET-UG Botany MCQ-3

Question No:1

One of the most important functions of botanical gardens is that

(A) they provide area for recreation
(B) they allow ex-situ conservation of germplasm
(C) they provide natural habitat for wildlife
(D) they have collection of all tropical plants

Question No:2

Taxonomic hierarchy refers to

(A) a list of biologists who worked on taxonomy
(B) a group of taxonomists who decide the nomanclature rules
(C) stepwise arrangement of all categories for classification of plants and animals
(D) classification based only on evolutionary relationships

Question No:3

Binomial nomenclature means

(A) two names to a plant; one latinized and other regional
(B) two names given by two scientists
(C) one name with a generic and a specific epithet
(D) two scientists giving the same name

Question No:4

Living organisms are characterised by

(A) catabolism
(B) Irritability
(C) Anabolism
(D) all of these

Question No:5

The lowest level of organization among following is

(A) landscapes
(B) ecosystems
(C) populations
(D) communities

Question No:6

Which of the following hierarchy is correct with reference to levels of biological organization?

(A) Species —> Communities —> Population —> Ecosystems —> landscapes —> Biosphere
(B) Species —> Population —> Communities —> Ecosystems —> landscapes
(C) Species —> Populations —> Ecosystems —> Landscapes —> Communites —> Biosphere
(D) Species —> Population —> Communites —> Landscape —> Biosphere —> Ecosystems

Question No:7

Metabolism comprises

(A) digestion of food
(B) exchange of gases
(C) elimination of wastes
(D) various energy exchanges in cell

Question No:8

Synthesis reactions in the body form a division of metabolism called

(A) anabolism
(B) catabolism
(C) chemical reaction
(D) none of these

Question No:9

Cellular respiration

(A) occurs in heterotrophs only
(B) occurs in response to environmental changes
(C) occurs in both autotrophs and heterotrophs
(D) is a process whereby sunlight is used to synthesize cellular components with release of energy

Question No:10

In a redox reaction

(A) an oxidising agent accepts a proton
(B) a reducing agent donates a proton
(C) a reducing agent become oxidised as it accepts an electron
(D) energy is transferred from a reducing agent to an oxidising agent

Question No:11

Homeostasis is

(A) generally depends on the action of cilia
(B) occurs at population level not in organisms or cells
(C) is the long term response of organisms to change in their environment
(D) is the tendency of organisms to maintain a constant internal environment

Question No:12

Growth in living being is by

(A) Cell division
(B) Cell elongation
(C) Cell differentiation
(D) All the above

Question No:13

Plants differ from animals in having

(A) definite lifespan
(B) localized growth
(C) indefinite growth
(D) localized growth and indefinite lifespan

Question No:14

The splitting of an Amoeba into two is best described as an example of

(A) paedogenesis
(B) Parthenogenesis
(C) sexual reproduction
(D) asexual reproduction

Question No:15

An increase in the size or number of cells best describes.

(A) homeostasis
(B) biological growth
(C) asexual reproduction
(D) chemical level of organization

Question No:16

Cause of mimicry is

(A) attack
(B) isolation
(C) protection
(D) both (b) and (c)

Question No:17

Which of the following is main adaptation for plant to survive in xerophytic condition?

(A) Spines
(B) no stomata
(C) Stipular leaves
(D) Long tap root system

Question No:18

Which of the following adaptations help in evolution?

(A) Short term and heritable
(B) Long term and heritable
(C) Long term and nonheritable
(D) Short term and nonheritable

Question No:19

An orchid flower resembling the shape of a female fly so as to be able to get pollinated. This is an example of

(A) adaptation
(B) homeostasis
(C) mimicry
(D) pseudopollination

Question No:20

About 98 percent of the mass of every living organism is composed of just six elements including carbon, hydorgen, nitrogen, oxygen and:

(A) magnesium and sodium
(B) sulphur and magnesium
(C) phosphorus and sulphur
(D) calcium and phosphorus