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1
The bacteria were considered as plants earlier because __________________.
they have well defined nucleus
due to the presence of cell organelles
due to the presence of cell wall
None of the above
2
The tap root system is found in which of the following class of plants ?
Monocotyledons
Gymnosperms
Dicotyledon
3
A unicellular algae is ____________
Volvox
Spirogyra
Chlamydomonas
Vaucheria
4
_______________ algae considered as ancestors of land plants.
Brown algae
Red algae
Green algae
Blue - green algae
5
After fertilization, the ovules develop into
Zygote
Fruits
Zygospores
seeds
6
Which of the following is the category used in the classification system ?
Species
Degree
Group
7
______________ is the name of the book written by Charles Darwin.
Human evolution
The Origin of Species
Systema Nature
8
Read the given passage and select correct option for X and Y.
Microorganisms are used for the large scale production of alcohol, wine and acetic acid. X is used for commercial production of alcohol and wine. The process of conversion of sugar into alcohol is known as Y.
X : Streptococcus; Y - Aerobic respiration
X : Saccharomyces; Y : Fermentation
X : Lactobacillus; Y : Fermentation
X : Saccharomyces; Y : Aerobic respiration
9
Reserve food material of algae is ___________________
Starch
Glycogen
Fat
Sugar
10
Thick walled, highly resistant spores produced within the bacteria cells are ________________ .
Conidia
Endospores
Zoospores
Gonidia
11
Seeds are naked in __________________ .
Gymnosperm
Angiosperm
Both a and b
Monocots
12
Which among the following produce seeds?
Thallophyta
Bryophyta
Pteridophyta
13
Mycoplasma differ from bacteria in ____________________ .
Not having acell wall
Having organised nucleus
having organised cell organelles
none of the above
14
Mushroom are what type of fungus ?
Basidiomycetes
Ascomycetes
Zygomyceyes
None of these
15
Name the microorganisms shown in the figure given below.
Virus
Fungus
Bacterium
Protozoan