RE-NEET 2026

Which of the following hormone is not secreted by human placenta?

Which of the following represents the correct sequence of arrangement of bones in the lower limb of humans?

The number of vertebrae in a human is $\_\_\_\_$ .

Muscle contraction is initiated by a signal sent by the central nervous system by the release of $\_\_\_\_$ .

Which of the following is the correct order of arrangement of vertebrate column from the head to toe?

Which of the following is used as a clot buster?

Which of the following statements about lac-operon is correct?

Which of the following enzymes synthesizes precursor mRNA?

Phyllotaxy is the pattern of arrangement of $\_\_\_\_$.

\(\text { Match List-I with List-II. }\)








List-I



List-II





A.

Marginal placentation

I.

Argemone





B.

Axile placentation

II.

Tomato





C.

Parietal placentation

III.

Primrose





D.

Free central placentation

IV...

Which of the following are characteristic features of Solanaceae family?
(a) Flowers are bisexual and actinomorphic
(b) Calyx have five sepals and are united
(c) Androecium have five stamens and are epipetalous
(d) Ovary is inferior
Choose ...

Which of the following is not a part of human central neural system?

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason $\mathbf{R}$.
Assertion A : Abingdon tortoise in Galapagos islands became extinct within a decade after goats were introduced.
Reason R: Goa...

Consider a population of 10 million cells. Given the per-capita birth rate of 0.002 (per unit time) and the percapita death rate of 0.002 (per unit time), the expected number of cells after 10 generations is $\_\_\_\_$ .

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : The logistic growth model of populations is considered more realistic than the exponential growth model.
Reason R: Resource...

\(\text { Match List-I with List-II. }\)








List-I



List-II





A.

Both species are harmed

I.

Predation





B.

One species is harmed and the other is benefited

II.

Mutualism





C.

Both species are benefited

III.

Compet...

How many turns of Calvin cycle are required for the formation of three molecules of glucose?

Photorespiration reaction catalyzed by RuBisCo is shown below:
$\mathrm{RuBP}+\mathrm{O}_2 \rightarrow$ 3-Phosphoglycerate +X . Identify " X " from the given options:

Which pigment has absorption peak at 700 nm in the photosynthetic reaction centre PS I (P700)?

Which of the following statements regarding photorespiration are correct?
(a) Do not occur in C 3 plants
(b) $\quad \mathrm{CO}_2$ is consumed and $\mathrm{O}_2$ is generated
(c) Phosphoglycolate is formed
(d) No synthesis of ATP and NADPH
...

Select the correct sequence of experiments that led to a gradual understanding of photosynthesis in green plants.

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?

Which of the following plant growth regulators is used as herbicide?

Length of the stem at time 0 is 20 cm . The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the $7^{\text {th }}$ day?

Given below are two statements:
Statement I: In gymnosperms, the male and female gametophytes remain within the sporangia.
Statement II: In gymnosperms, seeds are not covered.
In the light of the above statements, choose the most appropriat...

Sphenopsida class belongs to $\_\_\_\_$ .

Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A : In an experiment, Mendel observed that the F1 progeny plants are all tall and none are dwarf.
Reason R : Stem height is a c...

Given below are two statements :
Statement I : Down's syndrome is caused by the absence of one of the X-chromosomes.
Statement II : Turner's syndrome is caused by the presence of an additional copy of the chromosomes.
In the light of the ab...

For a person with blood group 'O', which of the following is not a possible combination of parents' blood group genotypes?

The method of directly of injecting a sperm into ovum in assisted reproductive technology is called :

Which of the following disease is not sexually transmitted?

How many molecules of pyruvic acid are produced at the end of glycolysis from 206 molecules of glucose?

Which of the following plant produces non-albuminous seeds?

Which of the following in female gametophyte of an angiosperm helps in guiding the pollen tube for fertilizing the eggs?

If the diploid chromosome number of typical angiosperm is 36 , what would be the chromosome number in its endosperm?

How many theca are present in each lobe of a typical bilobed angiosperm anther ?

In frogs, the number of pairs of cranial nerves arising from the brain are $\_\_\_\_$ .

Genus represents $\_\_\_\_$ .

Arrange the following taxonomic categories in ascending order.
(a) Genus
(b) Class
(c) Order
(d) Phylum
(e) Family
(f) Kingdom
(g) Species
Choose the correct answer from the options given below :

\(\text { Match List-I with List-II. }\)



List-I

List-II


A.
Family
I.
Sapindales


B.
Genus
II.
Dicotyledonae


C.
Class
III.
Anacardiaceae


D.
Phylum
IV.
Angiospermae


E.
Order
V.
Mangifera


Choose the correct answer from the opt...

Arrange the following compounds in the increasing order of polarity
A. $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OCH}_2 \mathrm{CH}_3$
B. $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{OH}$
C. $\mathrm{CH}_3 \mathrm{COCH}_3$
D. $\mathrm{CH}_3 \mathrm{COOH...

\(\text { For the following reaction sequence, choose the correct option }\)

\(\text { The compound that CANNOT be obtained from the aldol condensation reaction shown below, is }\)

Consider the following reaction, and choose the correct option.

The correct statement about peptides and proteins is

\(\text { Match the vitamins in List I with their sources in List II }\)
$$ \begin{array}{|l|l|l|l|} \hline & \text { List I } & & \text { List II } \\ \hline \text { A. } & \text { vitamin A } & \text { I. } & \text { meat } \\ \hline \t...

The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is

The highest occupied molecular orbital for $\mathrm{Ne}_2$ is

\(\text { Match the species in List-I with their geometry in List-II. }\)



List-I

List-II


A.



PCl

5




PCl

5

PCl_(5)
I.
Tetrahedral


B.



BrF

5




...

$2 A \xrightarrow{k} B$ is a zero-order reaction, where $k=1.0 \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~min}^{-1}$. If the initial concentration of $A$ is 2 M , then the time taken to complete $75 \%$ of the reaction will be