CSS English Online Entry Test MCQs With Answers

Q-5.Rocks which have solidified directly from molten materials are called igneous rocks.Igneous rocks are commonly referred to as primary rocks because they are the original source of material found in sedimentaries and metamorphics.Igneous rocks compose the greater part of the earth's crust,but they are generally covered at the surface by a relatively thin layer of sedimentary or metamorphic rocks.Igneous rocks are distinguished by the following characteristics:(1) they contain no fossils:(2) they have no regular arrangement of layers;and (3) they are nearly always made up of crystals.

Sedimentary rocks are composed largely of minute fragments derived from the disintegration of existing rocks and in some instances from the remains of animal As sediments are transported.Individual fragments are assorted according to size.Distinct layers of such sediments as gravels,sand,and clay build up as they are deposited by water and occasionally wind.These sediments vary in size with the material and the power of the eroding agent.Sedimentary materials are laid down in layers called strata.

When sediments harden into sedimentary rocks,the names applied to them change to indicate the change in physical state.Thus,small stones and gravel cemented together are known as conglomerates;cemented sand becomes sandstone;and hardened clay becomes shale.In addition to these,Other sedimentary rocks such as limestone frequently result from the deposition of dissolved material.The ingredient parts are normally precipitated by organic substance such as shells of clams or hard skeletons of other marine life.

Both igneous and sedimentary rocks may be changed by pressure,heat,solution,or cementing action.When individual grains from existing rocks tend to deform and interlock they are called metamorphic rocks.For example granite,an igneous rock,may be metamorphosed into a gneiss or a schist.Limestone,a sedimentary rock,when subjected to heat and pressure may become marble,a metamorphic rock.Shale under pressure becomes slate.

iv.The relationship between igneous and sedimentary rocks may best be compared to the relationship between.

Aver:

She is true_______his word.

Bane:

Q-4. Both plants and animals of many sorts show remarkable changes in form,structure,growth habits,and even mode of reproduction in becoming adapted to different climatic environment,types of food supply,or mode of living.This divergence in response to evolution is commonly expressed by altering the form and function of some part or parts of the organism,the original identity of which is clearly discernible.For example,the creeping foot of the snail is seen in related marine pteropods to be modified into a flapping organ useful for swimming,and is changed into prehensile arms that bear suctorial disks in the squids and other cephalopods.The limbs of various mammals are modified according to several different modes of life-----for swift running (cursorial) as in the horse and antelope,for swinging in trees (arboreal) as in the monkeys,for digging (fossorial) as in the moles and gophers,for flying (volant) as in the bats,for swimming (aquatic) as in the sales,whales,and dolphins, and for other adaptations,the structures or organs that show main change in connection with this adaptive divergence are commonly identified readily as homologous,in spite of great alterations.Thus,the finger and wrist bones of a bat and whale,for instance,have virtually nothing in common except that they are definitely equivalent elements of the mammalian limb.

ii.The author provides information that would answer which of the following question?

I.What factors cause change in organisms?

II.What is the theory of evolution?

III.How are horses' legs related to seals'flippers?

She decided to have an abortion.

I have esteem______parents.

Attrition: