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Botany 7

Description: Botany 7
Number of Questions: 40
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Tags: Botany 7 Flower Plants and Water Relation Plant Water Relations Photosynthesis Photosynthesis in Higher Plants Transpiration Mutation
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Which of the following statements is not true?

  1. A gynoecium having free carpels is termed as syncarpous

  2. A gynoecium not having fertile ovules is called pistillode

  3. Ovary is the most important part of the pistil

  4. The chambers inside the ovary are called locules


Correct Option: A

Water is the ideal material for the disposal of solar energy absorbed in excess by plants because

  1. the solubility materials in water is high and enables free movement of water

  2. water is easily available to plants and its specific heat is high

  3. the upward movement of water creates a difference in water potential

  4. evaporation of water from the leaf surface creates absorption of mineral salts


Correct Option: B

What is essential for the reduction of CO2 into carbohydrates?

  1. ADP and NADPH2

  2. ATP and NADPH2

  3. ADP and NADP

  4. ATP and NADP


Correct Option: C

Each stoma is surrounded by

  1. parenchyma cell

  2. lenti cell

  3. guard cells

  4. passage cells


Correct Option: C

Lethal mutation is observed in:

  1. pisum

  2. cicer

  3. mirabilis

  4. sorghum


Correct Option: D

The type of chromosomal aberration involving two chromosomes is called:

  1. deletion

  2. inversion

  3. duplication

  4. translocation


Correct Option: D

A family having syngenesious stamens is:

  1. rubiaceae

  2. asteraceae

  3. malvaceae

  4. fabaceae


Correct Option: B

_______ made crosses in maize.

  1. Hutchinson

  2. Bateson

  3. Punnett

  4. Sinnot


Correct Option: A

Using the DNA ligase enzyme, the donor DNA fragments and the vector DNA fragments are joined together. This is called

  1. molecular cloning

  2. splicing

  3. tissue culture

  4. protoplasmic fusion


Correct Option: B

The first scientist to use the term mutation was:

  1. Darwin

  2. Sinnot

  3. Hugo de Vries

  4. Morgan


Correct Option: C

In dark reaction the reduction stages of reaction consumes

  1. 1 ADP and 2NADPH2 molecules

  2. 1 NADPH2 and 2ATP molecules

  3. 2 ATP and 2 NADPH2 molecules

  4. 1 ATP and NADPH2 molecules


Correct Option: B

A gynoecium having carpels that are united are called

  1. apocarpous

  2. syncarpous

  3. polycarpellary

  4. pistillode


Correct Option: B

Dichasial cyme is formed in:

  1. jasmine

  2. sunflower

  3. clerodendron

  4. tridax


Correct Option: C

The introduced cells in a tissue culture are made to divide and form a mass of undifferntiated tissue cells called callus by

  1. adjusting the ratio of auxin-cytokinin

  2. transferring the plantlets to pota in natural environment

  3. keeping the inoculated vessels at a desired constant temperature in an incubator

  4. solidifying the enriched mineral medium with agar


Correct Option: C

A concentration gradient of water vapour between the atmospheric air and intercellular spaces of leaves is created by

  1. the accumulation of water vapour in the intercelluar spaces of mesophyll which were created by the sun light on the surface of mesophyll cell walls

  2. the water in the cells filling the intercellular spaces of leaves

  3. the translocated water with the mesophyll cells of leaves through Xylem tissue

  4. the water present in the large intercelluar spaces and large number of stomataon the leaves


Correct Option: A

Certain points at which the adjacent non-sister chromsomes remain in contact are known as:

  1. synapsis

  2. chiasmata

  3. crossing over

  4. splicing


Correct Option: C

Gynoecium is composed of

  1. Carpels

  2. Microsporophyll

  3. Ovules

  4. Anther


Correct Option: A

The first step in the technique of protoplasmic fusion is the

  1. hybridization

  2. collection of somatic cells

  3. isolation of protoplasts

  4. selection and isolation of somatic cells


Correct Option: C

The sequential order of electron transport components, involved while electrons transfer from PS II to PS I during light reaction of photo synthesis, is

  1. Fe-S complexes, plastoquinone, plastocyanin and cytochrome

  2. Fe-S complexes, plastoquinone, cytochrome and plastocyanin

  3. Plastoquinone, cytochrome, plastocyanin and Fe-S complexes

  4. Plastocyanin, cytochrome, Fe-S complexes, plastoquinone


Correct Option: B

The ratio obtained by Bateson and Punnett in a cross between flowers and pollen grins of Lathyrus odoratus is known as:

  1. 7:1:7:1

  2. 7:1:1:7

  3. 7:7:1:1

  4. 1:7:1:7


Correct Option: B

Carpels are otherwise called as:

  1. Microsporophyll

  2. Megasporangium

  3. Megasporophyll

  4. Microsporangium


Correct Option: C

A character seen in the stamens of Rubiaceae is:

  1. monodalphous stamens

  2. diadelphous stamens

  3. syngenesious stamens

  4. epipetalous stamens


Correct Option: D

The innermost whorl of the flower, seen terminally upon the thalamus, is known as:

  1. calyx

  2. corolla

  3. gynoecium

  4. androecium


Correct Option: C

The type of placentation met within monocarpellary, unilocular ovary is known as:

  1. marginal placentation

  2. axile placentation

  3. parietal placentation

  4. basal placentation


Correct Option: A

A family having monadelphous stamens is:

  1. rubiaceae

  2. asteraceae

  3. euphorbiaceae

  4. malvaceae


Correct Option: D

Which one of the following statements related to gene mutation is correct?

  1. Gene mutation was first reported on Oenothera

  2. Sorghum plant fails to produce chlorophyll due to gene mutation

  3. Gene mutation is otherwise called chromosomal aberration

  4. Gene mutation is genetically significant


Correct Option: D

Turgor pressure develops in the epidermal cells of roots when there is:

  1. high water potential in the cytoplasm of cortical cells

  2. entry of water into root hair and increase in volume of cell sap

  3. a large vacuole in root hair filled with cell sap

  4. osmotic diffusion of water into the pericycle through passage cells


Correct Option: B

The sex of the parents has no influence over the inheritance of the characters. This principle in genetics is proved by

  1. monohybrid cross

  2. dihybrid cross

  3. reciprocal cross

  4. test cross


Correct Option: C

Isocitric acid is converted into 2-Oxoglutaric acid by the process of

  1. oxidative decarboxylation

  2. oxidative carboxylation

  3. dehydrogenation

  4. decarboxylation and hydrogenation


Correct Option: A

Ovule is otherwise known as

  1. microsporangium

  2. megasporangium

  3. megasporophyll

  4. microspore


Correct Option: B

The type of adelphy seen in Clitoria is:

  1. monadelphous

  2. diadelphous

  3. polyadelphous

  4. syngenesious


Correct Option: B

Mutation was observed by Hugo de Vries in:

  1. lathyrus

  2. cicer

  3. pisum

  4. oenothera


Correct Option: D

The net gain of glycolysis in terms of ATP molecules formed is:

  1. 2

  2. 4

  3. 38

  4. 36


Correct Option: B

Which is the most conspicuous structure in angiosperms?

  1. Stem

  2. Root

  3. Bud

  4. Flower


Correct Option: D

The inheritance of Epistatic Genes followed Mendel's law of independent assortment because:

  1. the first two classes of this have merged to produce a single phenotype

  2. there is interaction of two non allelic dominant genes

  3. the F1 phenotype is the same as that of true breeding dominant variety

  4. the F1 produces four kind of gametes in equal proportion


Correct Option: D

Linkage can be clearly observed in:

  1. pea

  2. sweat pea

  3. snapdragon

  4. maize


Correct Option: D

Apocarpous pistil refers to

  1. gynoecium having free carpels

  2. gynoecium having united carpels

  3. gynoecium not having fertile carpels

  4. gynoecium having three carpels


Correct Option: A

Which of the following statements is/are false?(a) In Lathyrus odoratus long pollen is a dominant character (b) There are four pairs of chromosomes found in Drosophila (c) Linkage is usually complete (d) Mendel's law of independent assortment is limited to genes carried on different chromosome pairs

  1. (a) and (d) only

  2. (c) only

  3. (b) and (c) only

  4. (c) and (d) only


Correct Option: B

Syngenesious means

  1. nine stamens united and one stamen is free

  2. stamens are united only by their filaments and the anthers are free

  3. stamens are united only by their anthers while the filaments are free

  4. five filaments are long and five filaments are short


Correct Option: C

The F2 ratio produced by complementary genesis essentially a modification of the Dihybrid F2 Mendelian Ratio because:

  1. the basic number of proportion of all kinds of offsprings is 16 in both types

  2. two pairs of genes are involved in the inheritance of complementary genes

  3. the different expression of the complementary genes produce one phenotype

  4. non-allelic dominant genes interact to produce one phenotype


Correct Option: A
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