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What does a biomarker refer to?

Which of these is a medicinal plant of potato family?

After heavy rainfall with poor drainage, leaves of many plants wilt due to a)root rot b)poor aeration c)high salt concentration d)low soil temperature

Which of these are heterosporous plants?

Mention whether the following statements are true (T) or false (F). Give reason in support of your answer.
(a) As you grow from childhood to adulthood, your skin cells divide only to replace such cells that are lost from the surface. (T/F)
(b) The unfertilised human egg has half the number of chromosomes of the body cells. (T/F)
(c) Nuclear membrane in a mitotically dividing cell remains intact up to the metaphase and disappears only in the telophase. (T/F)
(d) Mitotic cell division can be a mode of reproduction. (T/F)
(e) Crossing-over between chromatids can occur only between homologous chromosomes. (T/F)

Which one is known as ozonised oxygen?

In an inflorescence where flowers are borne laterally in an acropetal succession, the position of the youngest floral bud shall be

(a) proximal (b) distal (c) intercalary (d) any where

Synaptonemal complex is formed during

Process of fusion of male gamete and female gamete.

Match the parts of the human brain given in column I with the structural constituents listed in column II and select the right answer showing the correct matching of the alphabets of the two columns

$\begin{array}{cccc}& \text{Column - I Parts of Human Brain}& & \text{Column - II Structural constituents}\\ A& \text{Cerebellum}& e& \text{Pituitary gland}\\ B& \text{Cerbrum}& f& \text{Dendate nucleus}\\ C& \text{Brain stem}& g& \text{Frontal lobe}\\ & & h& \text{Pons}\end{array}$

How are your mother's sister's children related to you?

Name the scientist who said that cells arise from pre-existing cells.

Which of the following molecules can be broken down into acetyl Co A and enter the citric acid cycle?

Which of the following conditions correctly describes the manner of determining the sex in the given example?

Question 31
Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
Nuclear membrane fails to disintegrate

Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
Duplication of DNA does not occur

Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
Centromeres do not divide

Mitosis results in producing two cells which are similar to each other. What would be the consequence if each of the following irregularities occur during mitosis?
Cytokinesis does not occur.

State True / False with explanation.

(a) Abortions could happen spontaneously too. (True/ False)

(b) Infertility is defined as the inability to produce a viable offspring and is always due to abnormalities/defects in the female partner. (True/ False)

(c) Complete lactation could help as a natural method of contraception. (True/ False)

(d) Creating awareness about sex related aspects is an effective method to improve reproductive health of the people. (True/ False)

Which among the following is a prerequisite in Selaginella to exhibit seed habit?

Question 53
In the figure given below, the black line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll-a, answer the following

(a) What does the action spectrum indicate? How can we plot an action spectrum? Explain with an example.

(b) How can we derive an absorption spectrum for any substance?

(c) If chlorophyll-a is responsible for light reaction of photosynthesis, why do the action spectrum and absorption spectrum not overlap?

How is the mycorrhizal association helpful in absorption of water and minerals in plants?

Identify the wrongly bonded pair among the following with regard to DNA:

'Both a short day plant and a long day plant can flower simultaneously in a given place'. Explain.

What does the below diagram explain?

What was the minister’s diagnosis of the elephant’s condition?

ACTH is secreted by:

As spindle fibres are formed by centrioles during mitosis. But they are absent in plant cells. So who forms spindle fibres in plants in order to carry out mitosis.

-Uby. H

Teeth of cartilagenous fishes are modified

70-90 dB sound is

The broad part of ureter in the mammalian kidney is

The diffusible substance synthesised in the coleoptile tip causes phototropic bending. This was confirmed by

Ferredoxin is a constituent of

Which of the following is not the locomotory organ of protozoa?

Resting membrane potential is maintained by

Progesterone is used in hormonal IUDs in order to`

Ubisch granules are secreted by

With reference to different types of life cycles, which of the following statements is correct?

Transmission tissue is characteristic feature of

Heparin, Serotonin, and histamine are secreted by

Assertion: The trophic level represents a functional level, not a species as such.

Reason: A given species may occupy more than one trophic level in the same ecosystem at the same time.

The total numbers of atoms all elements present in mole of ammonium dichromate is: