Home
Class 12
BIOLOGY
The exotic species, which when introduce...

The exotic species, which when introduced in India became notorious weed, is
(a) Lantana camara
(b) Eicchornia crassipes
(c) Parthenium hysterophorus
(d) all of these

A

Lantana camara

B

Eicchornia crassipes

C

Parthenium hysterophorus

D

all of these

Text Solution

Verified by Experts

The correct Answer is:
D
Lantana, Eichhornia and Parthenium are all exotic species, which had been introduced in India. Lantana camara has replaced many species in forests of Uttar Pradesh and Madhya Pradesh. Eichhornia (Water hyacinth) has clogged water bodies including wetlands resulting in death of servral aquatic plants and animals. Parthenium has pushed out several herbs and shrubs from open places in the plains.
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following is not an invasive alien species in the Indian context? (a) Lantana (b) Cynodon (c) Parthenium (d) Eichhornia

An exotic species that is introduced to a new area, spreads rapidly and eliminates native species is called (a) Immigrant species (b) Invasive species (c) Destructive species (d) None of these

The reason behind conserving biodiversity have been grouped into which of the following categories ? (a) Narrowly utilitarian (b) Broadly utilitarian (c) Ethical (d) All of these

Assertion : Threatened species are those living species which have been greatly reduced in their number and are liable to become extinct if the causative factors continue. Reason : IUCN is an international organisation which maintains the IUCN red list of threatened species, to assess the conservation status of different species. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

This plant was introduced in India because of its beautiful flowers and shape of leaves but it became a notorious weed in Indain water bodies. Identify this plant.

Assertion : The Nile perch introduced into lake Victoria in east Africa led to the extinction of an ecologically unique assemblage of more than 200 species of cichlid fish in the lake. Reason : When alien species are introduced deliberately for economic or other uses, they often become invasive and cause extinction of indigenous species. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. This phenomenon is referred to as (a) fragmentation (b) alien species invasion (c) over-exploitation (d) co-extinction

Which of the following statements regarding the ethical argument for conserving biodiversity is incorrect? (a) We owe to millions of plant, animal and microbes species with whom we share this planet (b) Every species has an intrinsic value only when it is of an economic value to us. (c) It is our moral duty to care for the well-being of all species i.e., our biological legacy. (d) All of these

Which of the following is not the unit of time? a) Light year b) Astronomical unit c) Parsec d) all of the above

India relishes a history of religious and culture traditions which emphasised the protection of nature. In many cultures, tracts of forest were set aside, all the trees and wildlife within were venerated and given total protection. Such areas are refferred to as (a) hotspots (b) ethical groves (c) sacred groves (d) protected areas