Tag: protecting our environment

Questions Related to protecting our environment

Match List-I with List-II and select the correct answer using the codes given the lists.

List-I List-II
a. Smallest seed $1$. Mangroves
b. Pneumatophores $2$. Mesogeal
c. Germination in maize $3$. Sedges
d. Changing sites of plumule, radical, cotyledon $4$. N/A
botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. A-$1$, B-$2$, C-$3$, D-$4$

  2. A-$4$, B-$1$, C-$3$, D-$2$

  3. A-$4$, B-$1$, C-$2$, D-$3$

  4. A-$1$, B-$2$, C-$4$, D-$3$

Show answer
Correct Option: A

Consider the following plants.
a. Bruguiera
b. Eugenia
c. Kandelia
d. Schima
Which of the above are mangrove trees?

botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. $1$ and $2$

  2. $1$ and $3$ only

  3. $2$ and $4$

  4. $1, 3$ and $4$

Show answer
Correct Option: A

Which plant is found in mangrove zone?

botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. Rhizophora

  2. Acacia

  3. Pinus

  4. Tectona grandis

Show answer
Correct Option: A
Explanation:

Rhizophora is a genus of tropical mangrove trees, sometimes collectively called true mangroves. The most notable species is the red mangrove. It is distributed in estuarine ecosystems throughout the tropics. Rhizophora mangle grows on aerial prop roots, which arch above the water level, giving this tree the characteristic mangrove appearance.

Therefore, the correct answer is option A.

Dunaliella is able to live in hypersaline lakes by developing a high osmotic pressure through accumulation of

botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. Proline

  2. Sorbitol

  3. Glycerol

  4. All of the above

Show answer
Correct Option: C
Explanation:
Dunaliella are algal species which can survive in hypersaline lakes by preventing exosmosis. To achieve this, they store large amounts of Glycerol in their body which increases the osmotic pressure of their body fluids thus preventing exosmosis.
So, the correct answer is, 'Glycerol'.

Rhizophora occurs in

botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. Tropical rain forest

  2. Tropical deciduous forest

  3. Mangrove

  4. Both A and B

Show answer
Correct Option: C
Explanation:

Rhizophora is a genus of tropical mangrove trees. It occurs in Mangrove forests. It is also called as true mangrove. These are found in coastal intertidal zone. They are adapted to live in harsh environmental conditions. Thus, the correct answer is 'Mangrove.'

Sunderbans contain mainly

botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. Alpine trees

  2. Mangrove plants

  3. Grass

  4. Fir forests

Show answer
Correct Option: B
Explanation:

Sunderbans contain mainly mangrove plants. These are the mangrove area in the region of bay of Bengal. They have a thick canopy. The name is derived from the Sundari, the local name of the mangrove species Heritiera fomes. 

Thus, the correct answer is 'Mangrove plants.'

Phosphorus of ocean becomes available to land plants due to

biology adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. Sea birds

  2. Deep sea activities

  3. Ocean spray

  4. All of these

Show answer
Correct Option: A

Invertebrates were formed and active around:-

biology adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. $500$ mya

  2. $350$ mya

  3. $320$ mya

  4. $200$ mya

Show answer
Correct Option: A
Explanation:

Invertebrates were formed and active approximately 500 million years ago (mya). Jawless fish existed around 350 mya; while, sea weeds and few plants evolved approximately 320 mya. Dinosaurs extinct approximately 65 mya. 


So, the correct answer is option A. 

Match List I with List II and select the correct answer using the codes given the lists.

List-I List-II
a. Deciduous forest tree $1$. Tectona
b. Conifer $2$. Junipems
c. Palm $3$. Borassus
d. Aquatic microphyle $4$. Lemna
biology adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

  1. A-$1$, B-$3$, C-$4$, D-$2$

  2. A-$1$, B-$2$, C-$3$, D-$4$

  3. A-$2$, B-$1$, C-$3$, D-$4$

  4. A-$3$, B-$2$, C-$1$, D-$4$

Show answer
Correct Option: A

'Broadly utilitarian' argument for the conservation of biodiversity does not include

evs earth - our home need to conserve biodiversity protecting our environment rules are for everyone

  1. Bioprospecting

  2. Pollination

  3. Aesthetic value

  4. Climatic regulation

Show answer
Correct Option: A
Explanation:

Bioprospecting is the exploration of molecular, genetic and species level-diversity for gaining the products of economic importance. It comes under narrowly utilitarian category.