Tnpsc group 4|Previous year question papers(Botany) Online Test in English

Tnpsc group 4|Previous year question papers(Botany) Online Test in English

1.

1. Which of the following statements about respiration is true? 1. Respiration results in loss of dry weight in plants II.down of sugar in respi The intermediate chemical reactions in the break ration and synthesis of sugar in photosynthesis are much the same III. The Oxygen concentration is not known to affect respiration. IV. Respiration is a constructive process

1, II and IV

II and IV

I and il only

I and III

2.

Angiosperms differ from gymnosperms by

Being evergreen

Having compound leaves

Being smaller in size

Having ovule enclosed in the ovary

3.

Arrange the following plants species in descending order based on their altitude

junipers -Deodar - Maple - teak

junipers- Teak - Deodar - maple

junipers - teak - Deodar - Maple

Deodar - junipers - teak - Maple

4.

Arrange the sequence of mitosis in a logic way 1. Centromeres of Chromosomes attaches to spindle fibre II. Chromatids uncoil and cytokinesis occur III. Asters and spindle fibres are formed IV. Centromers split into two, daughters cen tromeres move apart

III, IV, I, II

II, IV, III, I

II, III, IV, I

lll ,VII, II

5.

Consider the following statements and select the correct answer:| Assertion(A) : Sclerenchyma cells provide me chanical support to the plants. Reason (R) : Sclerenchyma cells have thin cell walls.

Both( A ) and (R) are individually true and ( R ) is the correct explanation of ( A )

Both (A) and (R) are individually true but ( R ) is not a correct explanation of ( A )

(A) is true but ( R) is false

(A) is false but (R) is true

6.

Which of the following statements about 'Glycolysis' 2018) is/are True? 1. Glycolysis is also known as Pentose phosphate pathway. 2. The substrate of Glycolysis is Glucose . 3 . The final product of Glycogen. 4. Glycolysis is also known as Glyoxylate cycle

1 and 3

2 only

3 and 4

4 and 2

7.

The source of energy in any eco system are 9. Arrange the following common units of classification in ascending order ;; I . Family . ii . order . iii . species .iv . variety . v . Genus

ii , i , iii , iv , v

v , vi , iii , ii , i

iii ,v , iv , ii ,i

iv , iii , v , i , ii

8.

What percentage of plants are endemic in india ?

10%

33%

66%

72 %

9.

The fungus, neurospora has been extensively used as an experimental material in the study of

physiology

pathology

cytology

genetics

10.

What is phototropism?

movement of plants towards chemicals

movement of plants towards light

movement of plants towards soil

response of plants for day length

11.

Kuhne's tube can demonstrate the process of

Fermentation

Germination of seeds

Growth of plants

Aerobic respiration

12.

The source of energy in any eco system are

Osmotrophs

Autotrophs

Lithotrophs

Heterotrophs

13.

The Acid Rain destroys the vegetation, because it contains

Nitrates

Ozone

Carbon monoxide

Sulphuric acid

14.

Which of the following statements regarding soil are correct ? i . soil is a dynamic natural element . ii. it is composed of both mineral and organic matter . iii . The characteristics of soils depends on parent rock . iv . All the soils having a well developed soil profile

All are correct

i , ii, and iii are correct

i , ii and iv are correct

i , iii ,and iv are correct

15.

Which of the following is used as an atmospheric pollution indicator?

Lepidoptera

Lycopersicon

lichens

Lycopodium

16.

How many bio diversity Hot Spots in the world?

10

34

20

25

17.

All of the following are bacteria except

Bacteriophage

E.Coli

Lactobacillus subtilis

Corynebacterium diphtheria

18.

Trypanosomiasis is a disease transmitted by cytoplasm is called

Sand fly

Tse-tse fly

Fire fly

May fly

19.

Which protozoan causing Kala azar?

Trypanosoma gambiens

Leishmania donovani

Leishmania tropica

Plasmodium vivax

20.

for soil that has a relatively low content of Carnivorous adaptation of plants mainly compensate

Potassium

Nitrogen

Phosphate

Calcium

21.

Hormone secreted in root tip during the formation of nodule is

Auxin

Cytokinin

Zymase

Lipase

22.

. The root nodules of Casuarina which are capable of symbiotic nitrogen fixation contain the microbe

Rhizobium

Frankia

Anabaena

Azotobacter

23.

Metabolically inactive cell inclusions remaining in the cytoplasm is called

Reserve materials

Ergastic substances

Secretory Substances

Crystals

24.

The fungus, neurospora has been extensively used as an experimental material in the study of

physiology

pathology

cytology

Genetics

25.

The female sex organ un Alga - chara is called as i . Globule . ii . strobili . iii . Oospore . iv . Nucule

i

ii

iii

iv

26.

Which fungi impart '' earthy odor '' to the soil after rain ? i . pencillium . ii. Rhizopus . iii . Mucor . iv . streptomyces

i

ii

iii

iv

27.

i . Mo. ii . Mg . iii . Cl ... iv .. Ca ____________ is essential for binding of Ribosomal subunits ..

i and ii only

ii only

iii and iv only

iv only

28.

The instrument to measure the growth of plants is

Crescograph

Dictaphone

Spherometer

Spectroscope

29.

. Purpose of Green Phabut is

Agriculture

medicine

media

education

30.

A) Chloroplast 1. Kreb's cycle . B) Ribosome 2. Autolysis . C . Lysosome 3. protein synthesis . D. Mitochondria 4. ph ..Match List I with List II and select the correct answer using the codes given below the lists ; list l list ll

4 , 3 , 2 , 1

2 , 3 , 4 , 1

3 , 4 , 1 , 2

4 , 1 , 2 , 3

31.

Which of the following is a high water content vegetable ?

carrot

Cucumber

Green peas

Tomato

32.

Which one of the following is mostly subjected to recycling ?

Paper

Glass

Polyester

polythene

33.

Bright colour of the fruits and flowers is due to

Chromoplast

Chloroplast

Amyloplast

Leucoplast

34.

The cytoplasmic connections between adjacent cells through the cell wall pores are known as

Plasma membranes

Endoplasmic reticulum

Plasmodesmata

Cellulose

35.

Parasitic plants have some special root called

Mycorhizae roots

Haustoria

Epiphytic roots

Storage roots

36.

Match the following given under Column A with Col c) Sulphur 01 d) Nitrogen umn A with Column B and select the correct answer from the codes given below ; Column A Column B A ) Leaf tendril 1. Opunita plants . B ) Leaf spines 2. pitcher plants c ) Leaf surface 3. utricularia . D . Bladder 4 . Pea plant

4 1 2 3

1 3 2 4

2 4 3 1

3 2 1 4

37.

The energy released by the complete oxidation of one molecule of glucose in plants is

1600 kj

2300 kj

2500 kj

2900 kj

38.

Fungi are

Chlorophyllous thallophytes

Achlorophyllous thallophytes

Chlorophyllous spermatophytes

Achlorophyllous spermatophytes

39.

Tonoplast is a membrane around

cytoplasm

Vacuole

Mitochondria

nucleus

40.

What is the net gain of ATP molecules in the glycolysis step of anaerobic respiration ?

1 ATP molecule

2ATP molecule

3 ATP molecule

4 ATP molecule

41.

Point out the wrong statement in the following ;; Statement ;

The part of the cell which occurs betweeen the plasma membrane and nuclear envelope is knoan as cytoplasm

The cytoplasmic matrix can perform movement due to cytoplasm

The matrix is the seat of various chemical activities

The cytoplasmic is composed of only one type of structure i..e matrix

42.

In monohybrid cross a typical genotype ratio is

3 ; 1

9 ; 7

9 ; 3 ; 3 ; 1

1 ; 2 ; 1

43.

Heat shock proteins were first discovered in

Drosophila melanogaster

Arabidopsis taliana

Pisum sativum

Mimosa pudica

44.

In Which part of the mitochondira, oxidative phosphorylation occurs ?

Matrix

Membrane space

Outer membrance

Cristae

45.

Choose the xerophyte from the given plants

Mango

water lily

opuntia

vallisneria

46.

The net gain of energy from one molecule of glucose during aeropic respiration is

4 ATP

8 A TP

40 A TP

38 A TP

47.

whice one of the following bio geo chemical cycles is most dependant on bacteria ?

water cycle

carbon cycle

nitrogen cycle

phosphorous cycle

48.

2 , 3 - D IS used as

weedicide

vitamin

fertilizer

insecticide

49.

Cytochromes are found in

Matrix of mitochondria

cristae of mitochondria

Lysosomes

outer wall of mitochondria

50.

Pedgenesis refers to

Soil sedimention process

soil forming process

weathering procwss

eutrophication

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