Tag: botany

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Questions Related to botany

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Some plants have a habit of harbouring ants to save the plants from damage by other animals which is known as

  1. Entomophily

  2. Myrmacrophily

  3. Anemophily

  4. Hydrophily

  5. Zoophily
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Myrmecophily is the term applied to positive interspecies associations between ants and a variety of other organisms such as plants, other arthropods, and fungi. Myrmecophily refers to mutualistic associations with ants, though in its more general use the term may also refer to commensal or even parasitic interactions. The term myrmecophile is used mainly for animals that associate with ants.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Halophytes can grow on physiological dry soil due to

  1. Dry soil

  2. Excessive humidity outside

  3. Excessive salts in plants

  4. Excessive salts in water
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Halophytes grow in physiologically dry soil. The soil is having water but the soil solution has a high concentration of salts. Thus, the water is not easily available to plants, because water flows from a region of high water potential to a region of low water potential. 

Excess salt in soil solution means the water potential of soil solution is very less. To counter the reduction in water potential in the soil solution, the halophytes maintain a highly concentrated cell sap. So, the concentration of salt is very high in these plants.
So, the correct answer is option C.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Which one is a xerophyte?

  1. Capparis

  2. Lotus

  3. China Rose

  4. Casuarina
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Capparis decidua (family Capparidaceae) is commonly known as kair. It is 
distributed throughout the arid regions of India and other countries. Kair is a caducous plant, so in the foliage condition mainly stem and fruits are common. It is also known as Capparis aphylla.
Since the plant is xerophytic, it is generally found in dessert area and is highly draught resistant plant, which can survive for long. Tribal people prepare pickle from the fruits of kair. 

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

The plants in which vascular tissues are absent and well developed aerenchyma is present are

  1. Xerophytes

  2. Halophytes

  3. Hydrophytes

  4. Mesophytes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrophytes are water loving plants and grow in aquatic environments. In these plants mechanical tissue is absent. Xylem is poorly developed or absent. Hydrophytes possess special air storage parenchyma, called as aerenchyma. It makes plant parts light, spongy and flexible.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Succulent xerophytes are likely to be found in

  1. Tropical rain forest

  2. Deciduous forest

  3. Desert

  4. Tundra
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Xerophytes are the plants that has adapted to survive in an environment with little liquid water, such as a desert or an ice- or snow-covered region in the Alps and Arctic regions. Succulents plants stores water. They have mucilage to retain water. Stomata are sunken and usually open only during nights. 

Therefore, the correct answer is option C.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

A plant growing on a forest floor

  1. Has shallow roots

  2. Requires low light

  3. Has a deep tap root

  4. Requires strong light

  5. Requires moist soil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Typical plants that are found on the forest floor include a variety of ferns, mangrove trees, and vines. The canopy of trees spread their leaves to attract as much sunlight. Though the forest floor is the principal sites of decomposition, there is a stiff competition for sunlight and nutrients. The plants that occupy the forest floor are ones that require low light as they are adapted to grow under conditions of low light availability and have large dark  green leaves to absorb as much sunlight.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

The features of the xerophytic plant leaves are:

(i) Leathery surface
(ii) Large surface area
(iii) Waxy cuticle
(iv) Sunken stomata on upper epidermis

  1. (i), (ii) and (iv)

  2. (i) and (iii)

  3. (i), (iii) and (iv)

  4. (i) and (iv)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Xerophytes are plants of dry habitats, which are faced with the problem of more water loss through transpiration than is water available from soil, e.g., Acacia, Casuarina etc.
In these plants leaves or leaflets are often small, vertical, thick and leathery. Cuticle is thick and waxy. Stomata are sunken and restricted to lower surface of leaf.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

The root pockets are present instead of root caps in

  1. Utricularia

  2. Eichhornia

  3. Hydrilla

  4. Limnophylla
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

  • The root cap protects the growing tip of roots from soil and hard rock surface. 
  • As hydrophytes are generally aquatic plants, no such protection is needed for their roots. 
  • As a result of which root cap is absent in hydrophytes.
  • In given options all are aquatic plants but utricularia, hydrilla and Limnophylla are rooted submerged plants there root are present in soil.
  • Eichhornia is free floating aquatic plant and there root arr floating in water so they don't have the need of root cap they have root pockets.
  • Option B is correct here.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Which one lacks both roots and stomata?

  1. Hydrophytes

  2. Mesophytes

  3. Hygrophytes

  4. Halophytes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hydrophytes are water loving plants. Stomata are absent in submerged hydrophytic plants. But floating hydrophytes have stomata on upper surface. e.g., lotus. Exchange of gases occurs through general surface in submerged hydrophytes. Emergent hydrophytes possess special air storage parenchyma called aerenchyma. It makes their different parts light, spongy and flexible. It can also help in exchange of gases with the atmosphere through stomata present in emergent regions. Roots of hydrophytes are poorly developed or completely absent in Wolffia. 

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

Type of plants having adaptations to check transpiration is

  1. Xerophytes

  2. Lithophytes

  3. Halophytes

  4. Epiphytes
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Xerophytes are the plants of dry habitats, where the environment favours higher rate of transpiration than the rate of absorption. Xerophytes have various adaptations to check water loss and increase water absorption.

Lithophytes are plants that grow in or on rocks.
A halophyte is a plant that grows in waters of high salinity, coming into contact with saline water through its roots or by salt spray, such as in saline semi-deserts, mangrove swamps, marshes and sloughs and seashores. 
An epiphyte is a plant that grows harmlessly upon another plant (such as a tree) and derives its moisture and nutrients from the air, rain, and sometimes from debris accumulating around it.

Thus, the correct answer is option A.