Tag: evs

Questions Related to evs

The range of temperature between -10 to -110 degree celsius is of

evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Clinical thermometer

  2. Weather thermometer

  3. Laboratory thermometer

  4. All of the above

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Correct Option: C

The weather reports use thermometer to measure the

evs weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate atmosphere and its components

  1. Minimum temperature

  2. Maximum temperature

  3. Maximum and minimum temperature

  4. None of the above

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Correct Option: C

Root system in hydrophytes is 

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. Fully Developed

  2. Partially Developed

  3. Absent

  4. None of the above

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Correct Option: B
Explanation:

Because hydrophtes are supported by water rather than by roots and stem structures, most hydrophtes as a result have roots that are small and feathery. These are designed to take in oxygen from the water, and since the plant is fully submersed in water at all times, there is less need for a long and thick root structure. One plant that has a feathery root is the Salvinia Molesta, which is a free-floating aquatic fern.


So, the correct option is 'Partially developed'.

Fixation of $CO _2$ into organic acids during night is a characteristic feature of?

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. Hydrophytes

  2. Desert succulents

  3. Tropical grasses

  4. Mesophytes

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Correct Option: A

What are examples of detrivores?

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. Bacteria, Soilmites, worms and fungi

  2. Planktons

  3. Plants Animals

  4. Omnivores

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Correct Option: A

Water lily is a/an 

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. Algae

  2. Mesophyte

  3. Fern

  4. Hydrophyte

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Correct Option: D
Explanation:

Often found on floating plants, many hydrophytes have air sacs that help the plant float on the surface of the water. The water chestnut is one example, which includes a beautiful cluster of green leaves with white flowers, attached to a fine root system. It is important to note that some aquatic plants will float slightly submerged in the water, such as the buttercup. Others, such as water lilies, will float up on top of the surface since their leaves distribute the weight across the surface of the water. 

Therefore, the correct answer is option D.

An example of a plant that lives in water is 

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. Opuntia

  2. Hydrilla

  3. Touch-me-not

  4. Calotropis

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Correct Option: B
Explanation:

Hydrilla is a genus of aquatic plant, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. Opuntia, touch me not and Calotropis lives on land. Thus, option B is correct and other options are wrong.

Aquatic ecosystem covers how much of the earth's surface?

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. 87%

  2. 23%

  3. 72%

  4. 49%

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Correct Option: C
Explanation:

About 72% of the land on the Earth is a part of the oceans. This water of the oceans, rivers, lakes and ponds contribute to the aquatic ecosystem. So, about 72% of the Earth's surface is covered under the aquatic form of ecosystems. There are two types of aquatic ecosystem, freshwater and marine ecosystem. 

Thus, the correct answer is option C. 

Algae $\rightarrow$ .......... $\rightarrow$ Small fish $\rightarrow$ Big fish $\rightarrow$Bird

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. Small animals

  2. Big animals

  3. Bacteria

  4. Sunlight

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Correct Option: A
Explanation:

In a freshwater aquatic ecosystem like a pond, the organisms in the food chain include algae, small animals, insects and their larvae, small fish, big fish and a fish-eating bird or animal.

So, the correct answer is 'small animals'

Hydrophytes are 

evs life in water aquatic plant adaptations pollination through water aquatic adaptation extreme adaptations

  1. The plants which need more amount of water

  2. The plants which need less amount of water

  3. The plants which grow in water

  4. The plants which do not absorb water

Show answer
Correct Option: C
Explanation:

Aquatic plants are plants that have adapted to living in aquatic environments (saltwater or freshwater). They are also referred to as hydrophytes or macrophytes. These plants require special adaptations for living submerged in water, or at the water's surface. The most common adaptation is aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is permanently saturated with water. They are therefore, a common component of wetlands. 

Therefore, the correct answer is option C.