NEET Botany MCQ-114

Question No:1

Ephemeral plants are categorized under

(A) Drought enduring plants
(B) Drought escaping plants
(C) True xerophytes
(D) Drought avoiding plants

Question No:2

Drought avoiding plants are

(A) Hydrophytes
(B) Mesophytes
(C) Succulents
(D) Parasites

Question No:3

Which one suffers from both external and internal dryness

(A) Opuntia
(B) Zizyphus
(C) Tribulus
(D) Aloe

Question No:4

The xerophyte with succulent phylloclades

(A) Casuarina
(B) Ruscus
(C) Aloe
(D) Opuntia

Question No:5

Sunken stomata are present in

(A) Xerophytes
(B) Hydrophytes
(C) Mesophytes
(D) Air the above

Question No:6

Sunken stomata and multiple epidermis occur in

(A) Hydrilla
(B) Mangifera
(C) Nerium
(D) Vallisneria

Question No:7

Well developed mechanical tissues and vascular tissues are seen in

(A) Hydrophytes
(B) Mesophytes
(C) Xerophytes
(D) Halophytes

Question No:8

True xerophytes are

(A) Ephemeral plants of deserts
(B) Succulent plants
(C) Non – succulent perennials
(D) None of the above

Question No:9

Identify a pair of xerophytes, whose aerial parts are succulent

(A) Asparagus and Ceiba
(B) Ceiba and Aloe
(C) Opuntia and Bryophyllum
(D) Asparagus and Aloe

Question No:10

Water storage tissue is present in

(A) Acacia
(B) Opuntia
(C) Calotropis
(D) Hydrilla

Question No:11

The ephemeral Tribulus tides over the dry conditions

(A) By its tuberous stem
(B) By its aerial stem
(C) In the form of seeds
(D) By storing water in different parts of its body

Question No:12

Multiple epidermis, sunken stomata, with stomatal hairs in Nerium leaf represent

(A) Xerophytic adaptation
(B) Mesophytic a daptation
(C) Hydrophytic adaptation
(D) Halophytic adaptation

Question No:13

An adaptation usually found in many xerophytes is

(A) Thin epidermis
(B) Stomata in pits
(C) Waxy coating
(D) Thick spines

Question No:14

A feature useful to minimise water loss in xerophytes is

(A) Extensive root system
(B) Thick cuticle
(C) Well developed water storage parenchyma
(D) Undivided lamina

Question No:15

The correct pair of plants, which can withstand prolonged period of drought

(A) Casuarina, Tribulus
(B) Nerium, Tribulus
(C) Ziziphus, Tribulus
(D) Casuarina, Calotropis

Question No:16

Fundamental unit of nature is

(A) Organisms
(B) Environment
(C) Ecosystem
(D) Ecology

Question No:17

The purpose of developing a carbon tax system in many countries is to

(A) Reduce green house gases
(B) Cut down CO2 in atmosphere
(C) Cut down CO in atmosphere
(D) All the above

Question No:18

What changes occur during ecological succession?

(A) Diversity and stability increase
(B) Non-living organic matter and food chains increase
(C) Biomass and energy flow increase
(D) All of the above

Question No:19

Primary succession refers to development of communities on a

(A) Newly exposed habitat with no record of earlier vegetation
(B) Pond freshly filled with water after a dry phase
(C) Forest clearing after devastating fire
(D) Freshly cleared crop field

Question No:20

If the vegetation of a place is burnt the first one to appear will be

(A) mosses
(B) lichens
(C) liver worts
(D) grasses