NEET Biology Online MCQ Test,NCERT CBSE Class 11 online mock test

Plant Ecology Mock Test-3

NEET Biology Plant Ecology Mock-Test-3

In submerged hydrophytes, gaseous exchange occurs through

(A) Hydathodes
(B) Stomata
(C) General body surface
(D) Injured parts

Useful adaptation for hydrophytes

(A) Large leaves
(B) Decrease in mechanical tissue
(C) Large mechanical tissue
(D) Increase in aerenchyma

Hydrophytes like Nymphaea and Nelumbo are

(A) Free floating hydrophytes
(B) Amphibious plant
(C) Submerged rooted hydrophytes
(D) Rooted hydrophytes with free floating leaves

Anatomically all hydrophytes are similar in having

(A) Aerenchyma
(B) Collenchyma
(C) Stomata
(D) Cuticle

Ephemeral plants are categorized under

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

Drought avoiding plants are

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

Which one suffers from both external and internal dryness

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

The xerophyte with succulent phylloclades

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

Sunken stomata are present in

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

Sunken stomata and multiple epidermis occur in

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

Well developed mechanical tissues and vascular tissues are seen in

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

True xerophytes are

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

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

Water storage tissue is present in

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

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

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

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

An adaptation usually found in many xerophytes is

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

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

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

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