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Question 39

Are the different types of plastids interchangeable ? If yes, give examples where they are getting converted from one type to another.

Question 2

What are the different ways in which glucose is oxidised to provide energy in various organisms?

Identify the placental hormone from the following.

Which one of the following is also known as ADH?

Which of the following practices is an example of over-exploitation?

Sporophyte of Funaria begins its development inside

The given figure shows two phases, A and B of a typical angiospermic life cycle. Select the correct option regarding it.

From the options given below, find out the correct floral formula for a flower having the following characters, namely actinomorphic, bisexual, five united sepals, five united petals, stamens five and epipetalous, bicarpellary, syncarpous with superior ovary–

Oxygen and carbon dioxide are exchanged in the lungs and through all cell membranes by ________.

What is photoperiodism

1. 31

Axon ends in _______.

Using a living material to test and analyse the effect of biologically active substances is known as

Question 4

How is the sex of the child determined in human beings?

Which of the following is the correct bar chart representing the number of chromosomes in the given plant parts if its microspore has 20 chromosomes?

Choose the antonym of

Novice

How many pairs of spinal nerves are found in human?

Lymph nodes form:

Body is covered with dry and cornified skin and epidermal scales in:

_______ refers to the variety of organisms existing on Earth, their interrelationships and their relationship with the environment.

which are the important dairy breeds of cow to remember

Assertion (A): Macronutrients are generally present in plant tissues in large amounts, in excess of 10 m mole $k{g}^{-1}$ of dry matter.

Reason (R): Micronutrients are needed in very small amounts, less than 10 m mole $k{g}^{-1}$ of dry matter.

Collenchyma generally forms ___________.

In a double stranded DNA molecule, the percentage of cytosine is 18. What would be the percentage of adenine?

A transverse section of stem is stained first with safranin and then with fast green following the usual schedule of double staining for the preparation of a permanent slide. What would be the colour of the stained xylem and phloem?

(a) Red and green

(b) Green and red

(c) Orange and yellow

(d) Purple and orange

The trait represented by the coloured circles and squares below is inherited as a dominant allele. This is not a sex-linked trait. Shaded individuals represent the dominant trait. What is the probable genotype of shaded individuals?

Haemocoel is found in

Which of the following characteristics is common to both humans and adult frogs?

Match the following columns:

$\begin{array}{cc}ColumnI& ColumnII\\ A.Opuntia& 1.Stemthorns\\ B.Asparagus& 2.Phylloclades\\ C.Citrus& 3.Cladodes\end{array}$

According to fluid mosaic model, the Plasma membrane is made up of:

Look at the pedigree chart and determine what kind of inheritance pattern it follows.

Emerson’s enhancement effect and red drop have been instrumental in the discovery of

Describe
in your own words what you understand by the term `ecology’.

Recombinant proteins are

Match
the items of column I
with those of column II:

The commonest disaccharide have the molecular formula: