The birds are well adapted for flying.
a) Write the general characters of Aves.
b) Give some of the flight adaptations seen in birds.

Adaptation is the attribute of the organism that enables it to survive and reproduce in its habitat. Give the adaptations of (a) cactus plant in desert (b) kangaroo rat in desert (c ) seals in polar region.

There are some lotus flowers in a pond. Some birds in flight thought of resting on them. When each bird sat on a flower, one bird had no seat. When a pair of birds sat on each flower, one flower had no bird. How many flowers? How many birds?

The details of the hydrocarbon 'P' are given below. i) There are 3 carbon atoms. ii) The family of compounds with 'P' as a member has a general formula C_(n)H_(2n) iii) The IUPAC name of 'P' is propene. a) Write the condensed formula of the compound b) Write the IUPAC name of the compound which is before 'P' in the homologous series. c) Give the molecular formula of the compound succeeding 'P' in the series.

Observe the following features of animals and answer the following questions. ** Moist skin ** Hooks and suckers ** Pneumatic bones ** Dry and nonglandular skin ** Metamerism a) Select the flight adaptation of birds. b) Select the amphibious adaptation of frog.