Botany Questions

There exists a close association between the alga and the fungus within a lichen. The fungus:

Chlorophyll in chloroplasts is located in:

Match the following:
Column-I
A. Peritrichous flagellation
B. Living fossil
C. Rhizophore
D. Smallest flowering plant
E. Largest perennial alga
Column-II
1. Ginkgo
2. Macrocystes
3. Escherichia coli
4. Selaginella
5. Wolffia

In which one pair both the plants can be vegetatively propagated by leaf pieces?

Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characteristic features of:

Auxospores and hormocysts are formed, respectively, by:

As compared to a C3 plant, how many additional molecules of ATP are needed for net production of one molecule of hexose sugar by C4 plants?

The ability of the venus flytrap to capture insects is due to:

Photosynthesis in C4 plants is relatively less limited by atmospheric CO2 levels because:

In the prothallus of a vascular cryptogam, the antherozoids and eggs mature at different times. As a result:

Which international body provides rules for naming plant species?

"Foolish seedling" disease of rice led to the discovery of:

The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is:

Which one of the following is being utilized as a source of bio-diesel in the Indian countryside?

Spore dissemination in some liverworts is aided by:

Which one of the following pairs, is not correctly matched?

Which one of the following elements is not an essential micronutrient for plant growth?

Male gametes in angiosperms are formed by the division of:

Which one of the following is surrounded by a callose wall?

For a critical study of secondary growth in plants, which one of the following pairs is suitable:

The wavelength of light absorbed by $P_r$ form of phytochrome is:

Flagellated male gametes are present in all the three of which one of the following sets?

One of endangered species of Indian medicine plants is that of:

Which of the following is a flowering plant with nodules containing filamentous nitrogen-fixing microorganism?

The opening of floral buds into flowers is a type of:

In gymnosperms, the pollen chamber represents:

The standard petal of papilionaceous corolla is also called:

One of the major components of cell wall of most fungi is:

Which of the following statements is wrong for viroids?

Specialized epidermal cells surrounding the guard cells are called:

Microtubules are the constituents of:

Mitochondria and chloroplast are:(i) Semi – autonomous organelles(ii) Formed by division of pre – existing organelles and they contain DNA but lack protein synthesizing machineryWhich one of the following options is correct?

Chrysophytes, Euglenoids, Dinoflagellates and Slime moulds are included in the kingdom:

The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals, include the:

A tall true breeding garden pea plant is crossed with a dwarf true breeding garden pea plant. When the $F_1$ plants were selfed the resulting genotypes were in the ratio of:

Tricarpellary, syncarpous gynoecium is found in flowers of:

In which of the following, all three are macronutrients?

Water vapour comes out from the plant leaf through the stomatal opening. Through the same stomatal opening carbon dioxide diffuses into the plant during photosynthesis. Reason out the above statements using one of following options:

Cotyledon of maize grain is called:

Which one of the following statements is not true?

In bryophytes and pteridophytes, transport of male gametes requires:

Which of the following is not a stem modification?

Which one of the following cell organelles is enclosed by a single membrane?

Proximal end of the filament of stamen is attached to the:

A cell at telophase stage is observed by a student. There is no formation of cell plate and thus the cell contains more number of chromosomes as compared to other dividing cells. This would result in:

Assertion : $C_4$ photosynthetic pathway is more efficient than the $C_3$ pathway.Reason : Photorespiration is suppressed in $C_4$ plants.

Double fertilization involves:

Which one of the following is correct matching of a plant, its habit and the forest type where it normally occurs?

Somaclonal variation appears in:

Which one of the following statements pertaining to plant structure is correct?

The family containing mustard and its main characters are:

Which of the following plant species you would select for the production of bioethanol?

The coconut water from tender coconut represents:

Water soluble pigments found in plant cell vacuoles are:

In meiosis crossing over is initiated at:

A plant avoids photorespiratory losses, has improved water use efficiency, shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. To which physiological group does this plant belong?

Emerson’s enhancement effect and Red drop have been instrumental in the discovery of:

Which of the following is not a characteristic feature during mitosis in somatic cells?

Seed formation without fertilization in flowering plants involves the process of:

Spindle fibres attach on to:

Stems modified into flat green organs performing the functions of leaves are known as:

In a chloroplast the highest number of protons are found in:

Nomenclature is governed by certain universal rules. Which one of the following is contrary to the rules of nomenclature?