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Match the following.

i.12 weeks a. In a male foetus testis migrates to scrotum

ii.14 weeks b. Male or genitals develop accordingly

iii. 24 weeks c. Covered with lanugo

iv. 32 weeks d. Baby’s head will engage

V. 40 weeks e. Organs are fully formed

Lubb is associated with

Explain the machanism of formatioin of concentrated urine in mammals.

What happens when the rate of resource extraction exceeds that of their regeneration?

Mitochondria are called powerhouses of the cell. Which of the following observations support this statement?
(a) Mitochondria synthesise ATP
(b) Mitochondria have a double membrane
(c) The enzymes of the Krebs cycle and the cytochromes are found in mitochondria.
(d) Mitochondria are found in almost all plants and animal cells.

The linkage map of the X-chromosome of fruit flies has 66 units, with yellow body gene (y) at one end and bobbed hair (b) gene at the other end. The recombination frequency between these two genes (y and b) should be :

Match the following.

Column - I Column - II
(i). Epidermis (a). Nutritive layer
(ii). Endothecium (b). Dehiscence of anther
(iii). Tapetum (c). Protective layer
(iv). Middle layers (d). Short-lived layer

'Little leaf' is caused due to the deficiency of

Transgenic animals have

Write the features tha distinguish between the two.

(i) Plasma and serum

(ii) Open and closed circulatory system

(iii) sino-atrial node and atrio-ventricular node

What is the procedure advised for the correction of extreme renal failure ? Give a brief account of it.

MSH of intermediate lobe of pituitary is responsible for _____.

Consider the following statements with reference to the Coastal Area Ecosystems:

Which of the above statements is/are correct?

How many chambers does a cockroach heart have?

Which of the following groups of people will have identical fingerprints?

Microtubule is involved in the

Which of the following is not true?

Water circulation in sponges does not help in

Which among the following statements is/are correct with respect to the law of dominance?

A. Each character is controlled by pair of discrete units called factors

B. In a dissimilar pair of factors one is dominant and the other is recessive

C. It explains the expression of one character in $F_1$ and both characters in $F_2$ generation.

D. Explains the proportion of 3:1 obtained in $F_2$ generation

What are the means of reproduction in fungi? Write the steps involved in sexual cycle?

For 5 marks

What is the name of the main stain in gram staining?

The Y-chromosome of drosophila is

Why is Meiosis II termed as Equational Division ?

Introduction of dna into bacteria by exposing the cell to the milli seconds jolts of ten thousand volt is

Which of the following has the highest number of species in nature?

The permissible use of the technique amniocentesis is for

At maturity, which of the following is non-nucleated?

Vitamin K is required for

Which of the following macronutrients are required for the synthesis of nucleic acids?

Enzyme TPA or tissue plasminogen activator is used for:

A pea plant shows the genetic makeup TtRr. How will the plant appear externally?

Depolarization of axolemma during nerve conduction takes place because

The substrate which undergoes oxidation and phosphorylation in glycolysis is ______.

The detailed structure of the membrane was studied after the advent of the electron microscope during

Identify the following Epithelial Tissue and select the correct option by name :

What are the reasons for superbugs to be formed?

Which of the following is lack of blood supply?

1) Bone 2)Cartilage 3)Connective Tissue 4)All of given options

'Opportunity costs of negative environmental impact are high.' Elaborate.

Assertion(A): ABA helps seed to withstand desiccation and other factors unfavorable for growth.

Reason(R): ABA induces seed dormancy.

Explain in-vitro fertilization? [2 MARKS]