Plant Communities and Ecological Adaptations

As per Allen's rule, mammals of cold regions conserve body heat through

Which of the following morphological adaptations is/are not found in epiphytes?

Epiphytes have no attachment to the ground so they are called air plants

List some morphological adaptations in epiphytes.

Vallisneria is example of an_____.

Which of the following statements is/are correct?

Which of the following statements is/are correct?

Vallisneria is an example of

Give a term for the plants that grow on a supporting plant for shelter ony.

Velamen helps in the absorption of moisture from the atmosphere.

One of the following is not true for hydrophytes

Plants growing in saline soil/high concentration of salts/seashore are

Dumaliella, a green alga is a halophyte, which stores

One of them is a submerged hydrophyte
Or
Which of the following is/are an angiospermic hydrophyte

Cactus are seen in _____ habitat.

In _____, the leaves are reduced to spines so that transpiration loss is checked and water is stored in the tissues of the stem.

Cause of mimicry is

Identify a combination of ecological adaptations in xerophytes.

I. Cuticle is totally absent.

I. Hypostomatous and sunken stomata in some plants.

III. Root caps are usually absent.

IV. Well developed root caps.

The correct pair is

Select the pairs of plants, in which roots of the hydrophytes are fixed to the substratum, but their long petiolated leaves keep them floating on the water surface:
i) Salvinia
ii) Victoria regia
iii) Utricularia
iv) Nymphaea

Identify the plants respectively based on the characters.
I) Roots fixed with mud with long petiole.
II) Lives partly in water and partly in air.
III) Annual, found in dry zones, complete its life cycle within short period.
IV) Root hairs and caps are well developed.

A) Typha
B) Tribulus
C) Casuarina
D) Victoria regia
E) Hydrilla