Read the following statements with respect to the features of biomes and select the correct option for tropical rain forests:
$a.$ Buttress roots
$b.$ Vines,lianas and epiphytes are abundant
$c.$ Highly leached soils
$d.$ Soil has high base content
$e.$ $30-40 \; m$ tall canopy structure with $2-3$ strata only

Which of the following levels is not considered a biological level of organization in terms of size?

Read the given statements and determine how many of them are incorrect.
$(1)$ Regional and local variations in habitats create a wide variety of biomes.
$(2)$ Temperature,light,and soil are the key elements for the physical and chemical variations in an ecosystem.
$(3)$ Tuna fish are found in the ocean and are classified as warm-blooded and homeothermic animals.
$(4)$ Red algae are found in the deep-sea regions.

Rhododendron is a characteristic plant of which region?

Consider the following four statements $(a-d)$ regarding certain desert animals like the kangaroo rat:
$(a)$ They have a dark color and high rate of reproduction and excrete solid urine.
$(b)$ They do not drink water,breathe at a slow rate to conserve water,and their body is covered with thick hair.
$(c)$ They feed on dry seeds and do not require drinking water.
$(d)$ They excrete very concentrated urine and do not use water to regulate body temperature.
Which two of the above statements are true?

Succulent xerophytes are likely to be found in