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What is the correct answer?

4

A sterile stamen is known as

A. staminode

B. anther

C. pollen grain

D. filament

Correct Answer :

A. staminode


Staminode is a sterile or abortive stamen, frequently resembling a stamen without its anther.

Related Questions

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4

Roots develop from parts of the plant other than radicle are called

A. tap roots

B. fibrous roots

C. adventitious roots

D. nodular roots

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4

The given figure (A, B, and C) shows different types of roots. Identify the root which is seen in wheat plant and originate from the base of the stem? 
q15

A. A

B. B

C. C

D. Both A and B

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4

The given figure shows the parts of flowering plant. Which parts of the given figure were involved in the following functions:

  1. Storing reserve food material

  2. Synthesis of plant growth regulators.

  3. Absorption of water and minerals from the soil.

  4. Providing a proper anchorage to the plant parts


q16

A. 5 and 6

B. 1, 2 and 6

C. 1, 2, 3 and 4

D. 2, 4, 5 and 6

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4

Floral features are chiefly used in angiosperms identification because

A. flowers are of various colours.

B. flowers can be safely pressed.

C. reproductive parts are more stable and conservative than vegetative parts.

D. flowers are good materials for identification.

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4

Match column-I with column-II and choose the option which shows their correct combination.
Column-IColumn-II
A. GamosepalousI. Flower of lily
B. PolysepalousII. Sterile anther
C. GamopetalousIII. Free petals
D. PolypetalousIV. Free sepals
E. EpiphyllousV. Fused petals
F. StaminodeVI. Fused sepals

A. A IV, B V, C III, D I, E VI, F II

B. A IV, B III, C V, D I, E II, F VI

C. A VI, B IV, C III, D V, E I, F II

D. A VI, B IV, C V, D III, E II, F I

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4

The given figure shows the parts of mango and coconut. Choose the option which shows the correct labelling of A, B, C and D marked in the figures. 
q11

A. A - Epicarp, B - Mesocarp, C - Seed, D - Endocarp

B. A - Epicarp, B - Mesocarp, C - Ovule, D - Endocarp

C. A - Epicarp, B - Mesocarp, C - Ovary, D - Endocarp

D. A - Epicarp, B - Mesocarp, C - Embryo, D - Endocarp

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4

Which one of the following characteristics is not related to gynoecium?

A. It is the female reproductive part of the flower.

B. It is composed of stamens.

C. Stigma is usually at the tip of the style and is the receptive surface for pollen grains.

D. Each ovary bears one or more ovules attached to a flattened, cushion like placenta.

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4

Aleurone layer helps in

A. storage of food in endosperm.

B. protection of embryo.

C. utilization of stored food.

D. all of the above.

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4

The primary roots and its branches constitute the

A. fibrous root system.

B. tap root system.

C. adventitious root system.

D. all of the above

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4

Read the following statements and answer the questions.
  1. Gynoecium is situated in the centre and other parts of the flower are located on the rim of the thalamus almost at the same level.
  2. Ovary is half-inferior.
  3. Examples are plum, rose and peach.

Which condition of flowers is being described by the above statements ?

A. hypogyny

B. perigyny

C. epigyny

D. none of these

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4

When a flower has both androecium and gynoecium, it is known as__________.

A. asexual

B. bisexual

C. unisexual

D. multisexual

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4

Which one of the following structure is not associated with gynoecium?

A. Ovary

B. Style

C. Stigma

D. Filament

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4

Which of the following statements is correct?

A. Imbricate aestivation is found in papilionaceous family.

B. Generally sepals are green, leaf like and protect the flowers in the bud stage.

C. In cymose type of inflorescence, the main axis terminates in a flower, hence is limitless in growth.

D. In axile placentation ovary is one chambered but it becomes two cambered due to formation of the false septum.

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4

Which of the following represents the floral characters of liliaceae?

A. Six tepals, zygomorphic, six stamens, bilocular ovary, axile placentation.

B. Actinomorphic, polyphyllous, unilocular ovary, axile placentation.

C. Tricorpellary, actinomorphic, polyandrous, superior ovary, axile placentation.

D. Bisexual, zygomorphic, gamophyllous, inferior ovary, marginal placentation.

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4

The given figure shows a typical structure of monocotyledonous seeds. Identify A, B, C, D and E parts marked in the given figures. 
q13

A. A - Endosperm, B - Embryo, C - Scutellum, D - Coleorhiza, E - Coleoptile

B. A- Embryo, B - Endosperm, C - Scutellum, D - Coleoptile, E - Coleorhiza

C. A - Endosperm, B - Embryo, C - Scutellum, D - Coleoptile, E - Coleorhiza

D. A - Embryo, B - Endosperm, C - Scutellum, D - Coleorhiza, E - Coleoptile

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4

Match column - I, II and III and choose the correct option. 
q1

A. A - V, t; B - II, s; C -I, r; D -III, q; E -IV, p

B. A - I, t; B - II, s; C - III, r; D - IV, p; E - V, q

C. A - V, p; B - II, s; C - I, q; D - III, r; E - IV, t

D. A - V, p; B - III, q; C - II, s; D - I, t; E - IV, r

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4

Which of the following plants is growing in swampy areas, where many roots come out of the ground and grow vertically upwards?

A. Potato

B. Opuntia

C. Rhizophora

D. Grass

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4

Which one of the following option shows the correct labelling of the structure marked as A, B, C & D? 
q10

A. A - Gynoecium, B - Megasporophyll, C - Ovule, D - Thalamus

B. A - Gynoecium, B - Stamen, C - Seed, D - Thalamus

C. A - Microsporophyll, B - Stamen, C - Ovule, D - Thalamus

D. A - Gynoecium, B - Stamen, C - Ovule, D - Thalamus

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4

Matching colmun I with column II and choose the correct option.
Column IColumn II
A. ColeorhizaI. Grapes
B. Food storing tissueII. Mango
C. Parthenocarpic fruitIII. Maize
D. Single seeded fruitIV. Radicle developing from monocarpellary superior ovary
E. MembranousV. Endosperm seed coat

A. A III, B I, C IV, D II, E V

B. A IV, B II, C V, D I, E III

C. A V, B I, C III, D IV, E II

D. A IV, B V, C I, D II, E III

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4

Cotyledons and testa respectively are edible parts in which of the following group?

A. walnut and tamarind

B. cashew nut and litchi

C. french bean and coconut

D. groundnut and pomegranate

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4

The given figures (A & B) show two types of compound leaves. Choose the option which identity the correct compound leaf and their example (c).
q8

A. A - Pinnately compound leaf, C - Neem

B. A - Palmately compound leaf, C - Neem

C. B- Pinnately compound leaf, C - Silk cotton

D. B- Palmately compound leaf, C - Silk cotton

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4

Statement 1 : A simple leaf has undivided lamina.
Statement 2 : Leaves showing pinnate and palmate venations have various type of incisions.

A. Statement-1 and statement-2 are true and statement-2 is a correct explanation for statement -1.

B. Statement -1 and statement -2 are true but statement-2 is not a correct explanation for statement-1.

C. Statement-1 is true and statement-2 is false.

D. Both the statements are false.

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4

Identify the different types of aestivation (A, B, C and D) in corolla and select the correct option. 
q6

A. A-Valvate, B-Twisted, C-Imbricate, D-Vexillary

B. A-Vexillary, B-Valvate, C-Twisted, D-Imbricate

C. A-Imbricate, B-Vexillary, C-Valvate, D-Twisted

D. A-Twisted, B-Imbricate, C-Vexillary, D-Valvate

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4

Main function of leaf is

A. exchange of gases

B. increase the beauty of a tree

C. manufacturing of food

D. nerve impulse induction

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4

Which of the following is a modified stem for the protection of plants from browsing animals?

A. Tendrils

B. Thorns

C. Rhizome

D. Tuber

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4

Which of the following statements are correct about the leaf?
  1. Leaf is a lateral, generally flattened structure borne on the stem.
  2. It develops at the node and bears a bud in its axil.
  3. Leaves originate from root apical meristems and arranged in an acropetal order.
  4. They are the most important vegetative organs for reproduction.

A. (i) and (ii)

B. (ii) and (iii)

C. (i), (ii) and (iv)

D. all of these

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4

How many plants in the list given below have marginal placentation?
  1. Mustard
  2. Gram
  3. Tulip
  4. Asparagus
  5. Arhar
  6. Sunhemp
  7. Chilli
  8. Colchicine
  9. Onion
  10. Moong
  11. Pea
  12. Tobacco
  13. Lupin

A. Four

B. Five

C. Six

D. Three

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4

The main function(s) of root system is/are

A. absorption of water and minerals from the soil

B. storing reserve food material

C. synthesis of plant growth regulators

D. All of the above

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4

Pollen grains are produced within _________of stamen.

A. ovary

B. anther

C. filament

D. connective

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4

Fibrous root system is better adopted than tap root system for

A. transport of organic matter.

B. absorption of water and minerals.

C. storage of food.

D. anchorage of plant to soil.