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A carpel has three parts ovary,__ and stigma.

Guttation is the evidence of:

Why is the testis located outside the male human body and not inside.

How pituitary gland help in secretion of of hormones by other glands

What are the three types of papillae.Which two of these bear taste buds?What is the role of the third type?

Which of the following is/are not correctly matched?

Transpiration increases by increase in:

The normal number of chromosomes in the progeny is maintained when the germ cells:

Identify the functions of medulla oblongata.

The offsprings formed by asexual reproduction method have greater similarity among themselves because:
(i) asexual reproduction involves only one parent
(ii) asexual reproduction involves two parents
(iii) asexual reproduction involves gametes
(iv) asexual reproduction does not involve gametes
(a) (i) and (ii)
(b) (i) and (iii)
(c) (ii) and (iv)
(d) (i) and (iv)

Which of the following is most likely to have a much higher breathing rate?
(a) man
(b) fish
(c) dog
(d) sparrow

Study the given data and answer the questions following the data:

$\begin{array}{ccc}\text{Parental plants cross}& \text{FI First Generation}& \text{F2 offsprings}\\ \text{fertilized and seeds collected}& \text{offsprings}& \text{of self pollination of Fl}\\ \text{Male parents always bear red flowers.}& \text{330 seeds}& \text{Out of 44 seeds 33 seeds are plants with red}\\ \text{Female parent always had white flowers,}& \text{sown and observed. All 330 are red flowers.}& \text{flowers and 11 seeds are plants with white flowers.}\end{array}$

i. What is the term used for this type of cross?

ii. What does the data of the column marked F1 indicate?

iii. Express the genotype of the (a) parents (b) F1 progeny and (c ) F2 progeny

Are glucose and alcohol bases?

Choose the correct sequence of events that occur in the process of phagocytosis.

The endomembrane system does not include

People living in coastal areas generally do not suffer from goitre. This is because

Fertilization in plants occurs in the________.

Once the ovulation is over, the released egg is then picked up by ___ of oviduct funnel.

___ is the hormone that is directly involved in homeostasis in the human body.

Question 8 (iii)
Given below is a square of letters in which are hidden different words related to respiration in organisms. These words may be present in any direction – upwards, downwards, or along the diagonals. Find the words for your respiratory system. Clues about those words are given below the square.


(iii) Muscular floor of chest cavity

WHY GLUCOSE IS ABSENT IN URINE OF HEALTHY PERSON ?

In a plant, red colour of fruit is dominant over yellow colour. When these two pure lines are crossed, the probability of producing $F_2$ homozygous plants with red fruits, heterozygous plants with red fruits, and plants with yellow colored fruits respectively is

Which of the following rotation of crops will reduce dependency on the use of chemical fertilizers?

Name the vein which brings blood to left atrium from lungs.

Can the fruit that has fallen or detached from the tree can be said to be alive? Give reasons for your answer.

How classification and evolution are interlinked to each other

Define the process of forming of a black hole

How is unfertilized egg in the female body removed ?

Voluntary muscle contractions are initiated in:

Bat and butterfly wings cannot be of any help in evolutionary study, because

Described below are the three steps in the process of how eutrophication leads to total destruction of aquatic life. Choose the option which has the correct sequence of these steps.
i) Algae die off, hence a large amount of organic matter is released.
ii) Bacteria begin to degrade organic matter, leading to a decrease in dissolved oxygen.
iii) Increase in nutrient concentrations causes a sudden growth spurt in algae.

All of the following are examples of an external stimulus except.

If p - 1, p + 3, 3p - 1 are in A.P., then p is equal to:

Given above is the diagram of an experimental setup to study the process of transpiration in plants. Study the same and then answer the questions that follow:

(a) Name the color of dry cobalt chloride paper?

(b) Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.

(c) Why are glass slides placed over the dry cobalt chloride papers?

(d) After about half an hour what change, if any, would you expect to find in the cobalt chloride paper placed on the dorsal and ventral sides of the leaf? Give a reason to support your answer.

If the nucleus from another amoeba is transplanted to enucleated amoeba, the recipient survives and divides and while the donor amoeba (enucleated) dies. This experiment shows that