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In a palmately compound leaf, the leaflets are attached to

In a dihybrid cross AABB $\times$ aabb, $F_2$ progency of AABB, AABb, AaBB and AaBb accurs in ratio of________

Which one of the following is not a fungal disease?

Which of the following processes take place outside the nucleus?

Study the diagram given below and then answer the questions that follow :

(a) Name the region in the kidney where the above structure is present?

(b) Name the parts labelled 1, 2, 3 and 4.

(c) Name the stages involved in the formation of urine.

(d) What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.

Distinguish between the following.

(a) Exarch and endarch condition of protoxylem

(b) Stele and vascular bundle

(c) Protoxylem and metaxylem

(d) Interfascicular cambium and intrafascicular cambium

(e) Open and closed vascular bundles

(f) Stem hair and root hair

Maximum extent of steric inhibition of resonance can be expected in:

The standard petal of a papilionaceous corolla is also called

Which of the following statement(s) is false, regarding Proteins ?

I. A protein is a heteropolymer but not a homopolymer.

II. Collagen is the most abundant protein in the animal world.

III. RUBISCO is the most abundant protein in the biosphere.

IV The first amino acid in a polypeptide chain is C- terminal amino acid and the last is N- terminal amino acid.

The efficiency of aerobic respiration is approximately

Aqueduct of sylvius connects:

Explain the rransport of $O_{2}andC{O}_2$ between alveoli and tissue with diagram.

What purpose(s) does endoplasmic reticulum serve in a cell?

Vernalisation can be replaced by the action of

3. Answer briefly:

a) Why are villi present in the intestine and not in the stomach?

b) How does pepsinogen change into its active form?

c) What are the basic layers of the wall of the alimentary canal?

d) How does bile help in the digestion of fats?

Bundle sheath cells

Organise a discussion in your class on the topic- Are viruses living or non-living?

A weak acid HA after treatment with 12 mL of 0.1 M strong base BOH has a pH of 5. At the end point, the volume of same base required is 26.6 mL. K_a of acid is:

In which one of the following is pollination autogamous?

What do you understand by micturition?

Match the excretory functions of Section I with the parts of the excretory system in Section II. Choose the correct combination from the answers given.
$\begin{array}{cc}SectionI& SectionII\\ \left(Functions\right)& \left(Partsofexcretorysystems\right)\\ A.Ultrafiltration& 1.Henl{e}^{\prime }sloop\\ B.Concentrationofurine& 2.Ureter\\ C.Transportofurine& 3.Urinarybladder\\ D.Storageofurine& 4.Malpighiancorpuscle\\ & 5.Proximalconvolutedtubule\end{array}$

Identify the type of food chain.

Dead animal →Blow fly maggots → Common frog → Snake

Identify the correct set related to biofortified crops.

Inferior ovary is found in a/an

Name the major veins which pour blood into the right atrium.

Day neutral plant relates to

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

Choose the wheat variety that has been fortified to have a high protein content

Which pigment is involved in photoperiodic change in plants?

Which of the following group of animals is bilaterally symmetrical and triploblastic?

Is mosquitoe a protozoan..? If not how a protozoan causes malaria .? And what is the name of the protozoan..?

Difference between phellogen and phelloderm and phellum?

Assertion (A): Sugars are synthesized in the bundle sheath cells of maize plants.

Reason (R): Calvin cycle occurs in the bundle sheath cells of $C_4$ plants.