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Which of the following is a part of the peripheral nervous system?

An action potential is _____.

During the night, $K^{+}$ and $C{l}^{-}$ ions move passively out of the guard cells. This results in:

Which of the following is a correct example of a species that wreaked havoc in an alien ecosystem?

Which of the following is not true about antibodies?

The modern man differs from apes in:

Which of the following correctly depicts the endonuclease activity of EcoR I?

In Pheretima ,Haemoglobin is present in

Explain the difference between mendelian disorder and chromosomal disorder.

In phloem transport, the source-sink relationship is variable. Identify the incorrect statement in support of this.

Question 12

The correct sequence of anaerobic reactions in yeast is



(a) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{mitochondria}{\to }Ethanol+Carbondioxide$

(b) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{cytoplasm}{\to }Lacticacid$

(c) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{mitochondria}{\to }Lacticacid$

(d) $Glucose\stackrel{cytoplasm}{\to }Pyruvate\stackrel{cytoplasm}{\to }Ethanol+Carbondioxide$

What are glial cells? What is their function?

Question 27

Marked temperature changes in the aquatic environment can affect:



(a) breeding of animals

(b) more growth of aquatic plants

(c) process of digestion in animals

(d) availability of nutrients

Which of the following terms is used to describe the component isolated from a plant for culturing in the specific medium?

The study of inheritance and variation is termed __.

Deficiency of calcium causes localized tissue necrosis, necrotic margins on young leaves. Symptoms of this deficiency tend to appear mostly in young leaves and not older leaves because __________.

What is Cambrian explosion?

What is meant by the following line from ncert::
"for many taxonomic groups, species inventories are more complete in temperate than tropical countries".

The beneficial use of epidermal layer is

Collect 5
examples of palindromic DNA sequences by consulting your teacher.
Better try to create a palindromic sequence by following base-pair
rules.

A toxic substance, responsible for the chills and high fever recurring every three to four days in material fever, is

Which of the following cannot be determined by observing a floral diagram?

The lawn grass (Cyandon dactylon) needs to be mowed frequently to prevent its overworth. Which tissue is responsible for its rapid growth?

What is the difference between ‘fibrous protein’ and ‘globular protein’ ?

Question 37

Does geographical isolation of individuals of a species lead to the formation of new species? Provide a suitable explanation.

Ratio between parental types and recombinants in a typical dihybrid cross conducted by Mendel is

Ethephon is a

When an artery constricts

How is language acquired in human
beings?

What is histamine in simple language. .

Function of histamine in stomach..