Tag: halophiles

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Questions Related to halophiles

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

Mangrove roots are a habitat of

  1. Fish

  2. Echinoderms

  3. Crabs and Oysters

  4. Cuttlefish and Octopus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Mangrove is an ecosystem that connects sea and land.  Mangrove trees are adapted to survive salt water. Mangroove roots are a habitat of fish. The roots provide structure and habitat for organisms such as fish to grow upon and hide behind. Oysters, mussels, sponges, snails, small fish are examples of fish that lives around mangrove roots.

Thus, the correct answer is 'Fish.'

Multiple choice botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles 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
  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-$3$
Reveal answer Fill a bubble to check yourself
A Correct answer
Multiple choice botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

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

  1. $1$ and $2$
  2. $1$ and $3$ only
  3. $2$ and $4$
  4. $1, 3$ and $4$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Among the listed plants, Bruguiera and Kandelia are well-known true mangrove trees adapted to saline intertidal zones. Eugenia and Schima are typical terrestrial or rainforest plants, not mangroves.

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

Which plant is found in mangrove zone?

  1. Rhizophora

  2. Acacia

  3. Pinus

  4. Tectona grandis
Reveal answer Fill a bubble to check yourself
A Correct answer
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.

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

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

  1. Proline

  2. Sorbitol

  3. Glycerol

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.
Multiple choice botany adapting to a habit adaptations - mangrove swamps, fast flowing rivers and treetops halophiles protecting our environment

Rhizophora occurs in

  1. Tropical rain forest

  2. Tropical deciduous forest

  3. Mangrove

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
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.'

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

Sunderbans contain mainly

  1. Alpine trees

  2. Mangrove plants

  3. Grass

  4. Fir forests
Reveal answer Fill a bubble to check yourself
B Correct answer
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.'

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

Phosphorus of ocean becomes available to land plants due to

  1. Sea birds

  2. Deep sea activities

  3. Ocean spray

  4. All of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Guano, which is the excrement of sea birds, is rich in phosphorus. When sea birds deposit this on land, it returns phosphorus from the marine food chain back to terrestrial ecosystems.

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

Invertebrates were formed and active around:-

  1. $500$ mya
  2. $350$ mya
  3. $320$ mya
  4. $200$ mya
Reveal answer Fill a bubble to check yourself
A Correct answer
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.