NEET Botany Class 11 Questions

According to five kingdom classification multicellular eukaryotes are placed in kingdoms?

Which statement is/are wrong with respect to kingdom protista.

Select the correct set of features present in the euglenoids. A. Cell wall is absent. B. Strictly a photosynthetic protist. C. Has a pair of equal flagella. D. Pigments are identical to those present in the higher plants.

Which of the following have multicellular sporophyte which is not free living but attached to photosynthetic gametophyte and derives nourishment from it?

Choose the correct statement.

Match the following phytohormones with their applications and choose the correct option.

Water containing cavities are present with the vascular bundles of :

In dorsiventral leaf, the location of palisade tissue and phloem respectively is :

In which among the following plant group, embryo formation is absent?

Which of the following kingdoms contain autotrophic organisms?

Statement^{-1} :- One of the cell of megasporangium develops into a multicellular male gametophyte. Statement^{-2}:- The ovule are borne on megasporophylls which may be clustered to form the male cone.

Which of the following is not a character related to Red Algae?

Statement I: Next to endodermis in dicot root lies a few layers of thick-walled parenchymatous cells referred to as pericycle. Statement II: Initiation of lateral roots and vascular cambium during the secondary growth in monocot roots takes place in pericycle region.

.......... was a German scientist, who observed that all plant tissues are made up of cells. At the same time .......... British scientist studied different type of animal cells.

What percent of photosynthetically active radiation is captured by plants to synthesise organic matter?

Statement I: In conjoint vascular bundles xylem and phloem are present separately. Statement II: Vascular bundles are arranged in a ring, each bundle in open, conjoint in dicot stem.

Auxin was first isolated by

An improved model of the structure of cell membrane was proposed by Singer and Nicolson in _____ widely accepted as _____?

Dikaryophase is observed in which of the following pairs?

The main plant body of the bryophyte is called a gametophyte. In pteridophytes, the main plant body is a sporophyte. Majority of the pteridophytes are heterosporous. The gymnosperms are homosporous. Select the correct option.

The region of the stem where leaves are borne are called;

Which statements are incorrect for mechanisms of nerve impulse conduction along electrical junctions of neuron or electrical synapse? (i) Nerve impulse flow directly from one neuron to other across the synapses in electrical synapses. (ii) Transmission of an impulse across electrical synapses is very similar to impulse conduction along a single axon. (iii) Impulse transmission across an electrical synapse is always faster than that across a chemical synapse. (iv) Electrical synapses are rare in our system. (v) At an electrical synapse, the membranes of the pre and post-synaptic neurons are separated by a fluid-filled space called synaptic cleft is thick. (vi) Chemicals called neurotransmitters are involved in the transmission of impulses at this synapse.

Arrange the following phases during developmental process in a plant cell in correct sequence and choose the correct option. senescence (A), death (B), maturation (C), plasmatic growth (D), meristematic cell (E)

How many statements are not correct for transport of oxygen? (i) About 97 per cent of O₂ is transported by RBCs in the blood. (ii) Each haemoglobin molecule can carry a maximum of four molecules of O₂ (iii) Binding of oxygen with haemoglobin is primarily related to partial pressure of O₂. (iv) Partial pressure of CO₂, hydrogen ion concentration and temperature are the other factors which can interfere with this binding. (v) A sigmoid curve is obtained when percentage saturation of haemoglobin with O₂ is plotted against the PO₂ (vi) Every 100 of oxygenated blood can deliver around 5 ml of CO₂ to the lungs under normal physiological conditions.

Identify the pair of heterosporous pteridophytes among the following.

Assertion (A): Taxonomic categories like species, genus and families are based on a number of similar characters. Reason (R): Generally, order and other higher taxonomic categories are identified based on the aggregates of characters.

Identify the incorrect statement from the following.

Match List-I with List-II:

Members of which kingdom are more abundant in warm and humid areas and show great diversity in morphology and habitat?

In anaphase of mitosis,

Match different stages of cell cycle given in column I with their respective features in column II and select the correct option.

Mycoplasma lack

Given below is the diagrammatic sketch of a maize seed. Identify the parts labelled as A, B, C and D and select the true option.

Given below are two statements: Statement I: The stage between meiosis I and meiosis II is called interkinesis and is generally long living. Statement II: In meiosis division number of chromosome in parent and progeny cells same so it is also called equational division.

Which of the following event does not occur in mitosis?

In a cell amount of DNA is 2C and chromosome no. are 21 these after S⁻phase amount of DNA and chromosome no. are

Consider the given two statements: I. During G₁ phase, the cell is metabolically active and continuously grows but does not replicate its DNA. II. During G₂ phase, proteins are synthesised in preparation for mitosis while cell growth is not seen. Of the two statements;

The taxonomic unit ‘phylum’ in the classification of animals is equivalent to which hierarchical level in classification of plants?

When single leaf arises at each node then phyllotaxy is called :-

R.Q. of Fats will be

Opposite phyllotaxy is present in :-

Unicellular, naked cytoplasm, multinucleated and saprophytic are the characteristics of

Growth is measured in terms of its length in case of

Match column I with column II and select the CORRECT option from the codes given below.

In flower, different whorls arranged successively on the swollen end of the pedicel, that swollen end is called :-

Parenchymatous cells with large intercellular spaces which occupy the central portion of the stem constitute :-

Identify the different types of aestivation (A, B, C and D) and select the CORRECT option.

In grasses, certain adaxial epidermal cells along the veins modify themselves into large, empty, colourless cells. These cells are called :

In most higher plants, the growing apical bud inhibits the growth of the lateral buds, this phenomenon known as

A bivalent of meiosis I consists of