Question

Give the groups of placental mammals?  

Answer 1

Placental mammals have 19 orders. Some are as follows: -

Insect Eating Mammals: -

They eat insect and nocturnal in habit. Their examples are shrew, mole etc.

Edentate mammals: -

Their nails are long and strong. With the help of nails they dig burrows to live. They

eat worms, insects and ants etc. Their examples are sloth, armadillo and pangolin etc.

Rodent mammals: -

Their front teeth (incisors) are pointed and sharp. They eat vegetables, fruits and

seeds. Their examples are rabbit, mouse and squirrel etc.

Flying Animals: -

These mammals can fly. Their fore limbs are modified into wings. They are nocturnal

in habit. Their sense of hearing is well developed. Their examples are bat.

Hoofed Mammals: -

They are herbivore. They are ruminants. Fore limbs and hind limbs are provided with

hoofs. Their examples are camel, horse, cow, buffalo, goat, zebra etc.

Trunked mammals: -

In these mammals upper lip and nose becomes long to form a trunk. They are biggest

animals on land. They are herbivore. Trunk is used to take food. Their example is

elephant.

Carnivorous mammals: -

These mammals eat meat. Their teeth and nails are very sharp and strong. Their

common examples are lion, cheetah, wolf, dog and bear etc.

Fish Like Mammals: -

They are totally marine. They look like fish. Their arms and legs are reduced to form

oars like structure which help them to swim. Their examples are whale and dolphin

etc.

Most Intelligent mammals: -

Their brain is highly developed. Their examples are man, monkey, gorilla and

chimpanzee etc.

Question: Write a note on flora of Pakistan?

Different types of plants present in a particular region form its flora.

Flora of Hilly Area: -

Hilly region have snow fall and low temperature. They have thick forest of cedar, chir,

chalghozah, olive, apple, plum ,peach and loquat etc.

Flora of Plains: -

Plains are fertile. In areas where rainfall is low, they have desert environment and

have trees of kikar, pilos, ber etc. Fertile plains have sheesham, cane, bamboo, and

eucalyptus etc.

Importance: -

i) These are source of timber.

ii) These are source of many fruits.

iii) Hilly areas have natural meadows, which are used as fodder of cattle.

iv) In watery places algae is source of food for aquatic animals as well as

they provide oxygen to environment.

v) Many plants are used as ornamental plants.

vi) Our food nutrients are obtained. i.e. What, Maize, Barley, Garlic,

Potatoes, Carrots, Turnips etc.