biology important question for railway 2018

1.   Difference between the prokaryotic and eukaryotic cells is in having

(a)          Cell wall

(b)         Nuclear membrane

(c)           Ribosome

(d)         None of these

Ans- b

2.  The function of nucleolus is the synthesis of

(a)          DNA

(b)         m-RNA

(c)           r-RNA

(d)         t-RNA

Ans- c

3.  Which one of the following has its own DNA?

(a)          Mitochondria

(b)         Dictyosome

(c)           Lysosome

(d)         Peroxisome

Ans- a

4.  Regarding the sequence of cell cycle, which one is correct

(a)          G₁, G_2, S and M

(b)         S, G_1, G₂ and M

(c)           G₁, S, G₂ and M

(d)         G_2, S, G₁ and  M

Ans- c

5.  The exchange of genetic material between chromatids of paired homologous chromosomes during the first meiotic division is called

(a)          Transformation

(b)         Chiasmata

(c)           Crossing over

(d)         Synapsis

Ans- c

6.  Chloroplast containing parenchyma is called

(a)          Chlorenchyma

(b)         Collenchyma

(c)           Aerenchyma

(d)         Amylanchyma

Ans- a

7.  Chromosomes contain hereditary units called

(a)          Genes

(b)         Ribosomes

(c)           DNA

(d)         RNA

Ans- a

8.  Which cell organelle is the known as control centre of the cell ?

(a)          Nucleus

(b)         Chloroplast

(c)           Mitochondria

(d)         Endoplasmic reticulum

Ans- a

9.  Who observed and coined the word ‘cell’ for the first time?

(a)          Robert Cook

(b)         Robert Brown

(c)           Robert Hooke

(d)         Leeuwenhoek

Ans- c

10.                   Who part of the cell serves as the intracellular highway?

(a)          Endoplasmic reticulum

(b)         Golgi apparatus

(c)           Cell membrane

(d)         Mitochondria

Ans- a

11.                   Which of the following would you not find in in a bacterial cell ?

(a)          DNA

(b)         Cell membrane

(c)           Golgi apparatus

(d)         Ribosomes

Ans- c

12.                   Which one of the following could be found in both the nucleus and the cytoplasm?

(a)          Nucleolus

(b)         Ribosomes

(c)           RNA

(d)         Both RNA & ribosomes

Ans- d

13.                   Which one of the following structures is an organelle within an organelle?

(a)          Ribosomes

(b)         Peroxisome

(c)           ER

(d)         Mesosome

Ans- a

14.                   The process of mitosis is divided into 4 phases. Identify the correct order in which these phases appear in the mitosis

(a)          Anaphase, metaphase, telophase and prophase

(b)         Telophase, anaphase, metaphase and prophase

(c)           Metaphase, prophase, anaphase and telophase

(d)         Prophase, metaphase, anaphase and telophase

Ans- d

15.                   Which of the following cells is found in the cartilagineous tissue of the body?

(a)          Mast cells

(b)         Basophils

(c)           Osteocytes

(d)         Chondrocytes

Ans- d

16.                   Survival of plants in terrestrial environment has been made possible by the presence of

(a)          Intercalary meristem

(b)         Conducting tissue

(c)           Apical meristem

(d)         Chondrocytes

Ans- b

17.                   The tissues that helps in the movement of our body is

(a)          Muscular tissue

(b)         Skeletal tissue

(c)           Nervous tissue

(d)         All of these

Ans- d

18.                   The connective tissue that connects muscle to bone is called

(a)          Ligament

(b)         Tendon

(c)           Cartilage

(d)         Areolar

Ans- b

19.                   Cartilage and bones are types of

(a)          Muscular tissue

(b)         Connective tissue

(c)           Skeletal tissue

(d)         Epithelial tissue

Ans- b

20.                   Intercalated disc is present in

(a)          Striated muscle

(b)         Smooth muscle

(c)           Cardiac muscle

(d)         Both (b) and (c)

Ans- c

21.                   Cells which take part in secondary growth are named as

(a)          Phloem

(b)         Xylem

(c)           Cambium

(d)         Medullary ray

Ans- c

22.                   Which of the following responsible for mechanical support and enzyme transport ?

(a)          Dictyosome

(b)         Cell membrane

(c)           ER

(d)         Mitochondria

Ans- c

23.                   Cell wall in higher plants is made up of

(a)          Cellulose + lignin

(b)         Cellulose + pectin

(c)           Cellulose + suberin

(d)         Cellulose + lipid

Ans- b

24.                   ATP molecule is a

(a)          Nucleosome

(b)         Nucleoside

(c)           Nucleotide

(d)         Deoxyribose sugar

Ans- c

25.                   Which one is not a carbohydrate?

(a)          Chitin

(b)         Methionine

(c)           Glycogen

(d)         Starch

Ans- b

26.                   Branches of botany dealing with the internal organization of plants known as

(a)          Physiology

(b)         Ecology

(c)           Anatomy

(d)         Cytology

Ans- c

27.                   Xylem functions as conducting tissue for water and minerals from _________ to the _________ and _________.

(a)          Roots, stems leaves

(b)         Stems, roots, leaves

(c)           Leaves, stems, roots

(d)         Leaves, stems, leaves

Ans- a

28.                   Most diverse macromolecules, found in the cell both physically and chemically are

(a)          Proteins

(b)         Carbohydrates

(c)           Nucleic acids

(d)         Lipids.

Ans- a

29.                   Lipids are insoluble in water because lipid molecules are

(a)          Hydrophilic

(b)         Hydrophobic

(c)           Neutral

(d)         Zwitter ions

Ans- b

30.                   Which one is the most abundant protein in the animal world?

(a)          Trypsin

(b)         Haemoglobin

(c)           Collagen

(d)         Insulin

Ans- c

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