Biology Objective Questions And Answers

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Q.1: Specialized protective coverings around megasporangium which vary in number are called------- ?

1. Sporangium
2. Integuments
3. Ovule
4. Pericarp

B

Q.2: Antherozoids the male gamete in bryophytes are attracted towards Archegonium i.e. female sex organ by----- ?

1. Phototactic phenomenon
2. Chemotactic phenomenon
3. Geotropic phenomenon
4. Chemotropic movement

B

Q.3: Mosses are included in sub-division of ------- ?

1. Anthoceropsida
2. Hepaticopsida
3. Bryopsida
4. Lycopsida

C

Q.4: Today the land habitat is dominated by--------- ?

1. Fungi
2. Gymnosperms
3. Angiosperms
4. Tracheophytes

D

Q.5: In bryophytes fertilization takes place in------ ?

1. Antheridia
2. Archegonia
3. water
4. Ovule

B

Q.6: A group of 8 cocci is called------- ?

1. Diplococci
2. Octococci
3. Tetrad
4. Sarcina

D

Q.7: Sex pill is formed in which of the following processes ?

1. Binary fission
2. Mitosis
3. Sexual reproduction
4. Conjugation

D

Q.8: Example of bacteria requiring low concentration of oxygen is------ ?

1. Campylobactor
2. spirocheta
3. E-coli
4. Pseudomonas

A

Q.9: which of the following gives to rise two daughter cell during cell division ?

1. meiosis
2. mitosis
3. both a & b
4. none of these

B

Q.10: Which of the following structure provides greater pathogenicity to the bacteria------- ?

1. Capsule
2. Slime
3. Cell Wall
4. Cell membrane

B

Q.11: All of the following are coelomates except:---------- ?

1. Deuterosomes
2. Proterosomes
3. Hemichordates
4. Aschelminthes

D

Q.12: Of the following which one is non-cellular in most cases in animals ?

1. Mesenchyme
2. Sclerenchyma
3. Chlorenchyma
4. Mesoderm

A

Q.13: Which of the following of bryophytes are the simplest one ?

1. Porella
2. Funaria
3. Anthocerus
4. Polytrichum

A

Q.14: The name animal is derived from the word------ ?

1. Anima
2. Anemia
3. Aname
4. All of these

A

Q.15: Gut in pseudocoelomates is made from------- ?

1. Ectoderm
2. Mesoderm
3. Endoderm
4. All of these

C

Q.16: A sponge of Antarctica which is more than a meter tall is---------- ?

1. Scolymastra joubini
2. Euplectella
3. Spongilla
4. Leucoselenia

A

Q.17: 80% of the food of sponges consists of------- ?

1. Detrital organic particles
2. Zooplankton and small animals
3. Phytoplanktons
4. all of these

A

Q.18: Notochord is present throughout life in--------- ?

1. Urochordates
2. Cephalochordates
3. Chordates
4. Vertebrates

B

Q.19: Nervous system of nematods consists of ?

1. Ventral nerve cord
2. Dorsal nerve cord
3. Lateral nerve cord
4. All of these

D

Q.20: True metamorphosis is not present in-------- ?

1. Crustacea
2. Insecta
3. Arachnida
4. Myriapoda

C