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Which of the following does not act as a neurotransmitter?

Assertion (A): Much of the nitrogen and small amounts of phosphorus and sulphur are carried in the organic form through the xylem.

Reason (R): Xylem transports only inorganic nutrients and phloem transports only organic nutrients.

____________ acts as the genetic material for most organisms.

________ is a disease caused by a Plasmodium and transmitted by the bite of infected mosquitoes.

The structural makeup of heart has:

Through which organs do humans excrete salts?

Vestigial organs are those that:

Division of the nucleus during cell division is called

In the bell jar experiment, how does KOH affect the process of photosynthesis?

i) After fertilization name the part which develops into:

a. fruit

b. seeds

ii) Give one point of difference between plumule and radicle.

Differentiate between homologous and analogous organs with 2 examples.

Which of the following examples of food under P, Q and R correctly match the descriptions?
P: Supplies materials for building cells.
Q: Supplies a lot of energy.
R: Supplies high dietary fibre.

Nucleolus is a -

Identify the brain part which lies below cerebellum and carries impulses from one hemisphere to the next.

_______are the building blocks of proteins.

The position of kidneys is ________ .

if the amount of bile juice is increased in our body we get jaundice? if yes why is it so?

Which of the following is the largest cell?

How is respiration different from breathing?

Can you please provide me with all the important questions of control and coordination

What do you mean by endocrine and exocrine gland and functioning of pancreas. briefly?

What is a bacterial diesase

An allele is defined as __________.

Which among the following hormones controls the loss of water through urine?

What is intracellular digestion?

Intestinal worms infect about _________ percent of the population of the developing world.

Differentiate between autotrophic and heterotrophic nutrition.

Why do tears come out of our eyes when we feel depressed?

How does veins prevent back flow?

End product of carbohydrates proteins and fats after digestion

In experiment showing thistle funnel which contains conc. sugar solution demonstrating osmosis, how does the sugar solution level rises even if the solution is concentrated?

One of the following traits cannot be inherited. This one is :
(a) colour of eyes
(b) colour of skin
(c) size of body
(d) nature of hair

Give one example each of a plant part:

(a) Which is positively hydrotropic as well as positively geotropic.

(b) Which is positively phototrophic but negatively geotropic.

Electricity generated by water stored in hydro power plant is an inderect source of solar energy. Justify the statemnent by discussing in sequence the series of energy transformation taking place.

In the ncert book absisc acid is used to stop the growth but in byju they say it opposite may I know the correct one pls sir/mam

What are the functions of the following?

1)Auxins

2)Cytokinins

3)Abscisic Acid

4)Gibberellins

5)Ethylene

please fast, I have exams day after tomorrow

Hereditary information is indicated by_________.

Q9. Consider the following statements about benefits of GM Crops:

1. Shelf life of foods can be extended.

2. Crops can be engineered to withstand extreme weather.

Which of the above statements are correct?

Which of the following organelles do not contain DNA?

Male gametophyte in angiosperms produces:

The endocrine system and the nervous system are structurally related. Which of the following cells best illustrate this relationship?