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Biology

Biology
The outermost layer of skin is

Tissues
Dermis
Hypodermis
Epidermis

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Biology
Flowers in which polllination takes place by insect their pollen grains are ________

Rough and sticky
Smooth and dry
Rough and dry
Large in Size

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Biology
In a bisexual flower if androcium and gynoecium mature at different time the phenomeon is known as ________

Dichogamy
None of these
Herpogamy
Haterogamy monogamy

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Biology
Which of the following is not a function of saliva?

Contains fluoride to harden the tooth enamel
Begins the chemical breakdown of starches
Helps clean the mouth
Moistens food and helps stick it together to make it easier to swallow

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Biology
The DNA of the bacterium is found present in a distinct nuclear region called

Nucleus
Nucleolus
Centrosome
Nucleoid

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Biology
In N2- fixation process, nitrite is converted to nitrate by

Nitosomonas
Azotobacter
Azospirillum
Nitrobacter

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