Calyx

Q. How to write floral formula? Explain.

Q.

What type of inflorescence is found in the family euphorbiaceae?

Q. Epicalyx is

1. a whorl of bracts
2. a whorl of bracteoles
3. a whorl of petals
4. a whorl of androecium

Q.

What is the spike in botany?

Q. Odd sepal is enlarged and leaf-like in:

1. Rose
2. Smilax
3. Mussaenda
4. Bougainvillea

Q. Epicalyx is

1. a whorl of bracts
2. a whorl of bracteoles
3. a whorl of petals
4. a whorl of androecium

Q. Match the columns I, II and III and choose the correct combination from the options given.

Column I Column II Column II

If 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	Alternate phyllotaxy	Alstonia
If the margin of thalamus grows upward enclosing the ovary completely and getting fused with it, the other parts of flower arise above the ovary	Perigynous	Inferior ovary
If the gynoecium occupies the highest position while the other floral parts situated below it	Hypogynous	Half inferior ovary

1. a-2-M, b-1-L, c-3-K
2. a-3-L, b-2-K, c-1-M
3. a-2-M, b-1-K, c-3-L
4. a-2-M, b-2-L, c-3-K

Q. The small projections present on the surface of pineapple fruit represent :

1. persistent styles
2. persistent stamens
3. persistent calyx
4. persistent bracts

Q.

A flower typically has six floral whorls.

1. True
2. False

Q.

The top part of the stalk in a flower is thickened and is called the__________.

Q.

The calyx is green in color since they originate from a leaf.

1. True

2. False

Q. Pappus is modification of

1. Bracts
2. Corolla
3. Calyx
4. All of the above

Q. Name the petals A, B and C in vexillary aestivation shown in the diagram.

1. A$=$Keel, B$=$Standard, C$=$Wing
2. A$=$Wing, B$=$Keel, C$=$Standard
3. A$=$Standard, B$=$Wing, C$=$Keel
4. A$=$Keel, B$=$Wing, C$=$Standard

Q. All floral leaves are placed on the ______ of flower.

1. Thalamus
2. Petal
3. Sepal
4. Ovule

Q. Which is the sequence of four whorls of flower from outside to inside?

1. Calyx $\to$ Corolla $\to$ Androceium $\to$ Gynoceium
2. Gynoceium $\to$ Androceium $\to$ Corolla $\to$ Calyx
3. Calyx $\to$ Androceium $\to$ Corolla $\to$ Gynoceium
4. Gynoceium $\to$ Corolla $\to$ Androceium $\to$ Calyx

Q. Assertion :Spathe, a bract of spadix attracts pollinators Reason: Spathe is often brightly coloured

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
3. Assertion is correct but Reason is incorrect.
4. Both Assertion and Reason are incorrect.

Q. Would a defoliated plant respond to photoperiodic cycle ?

1. No
2. Any condition is possible
3. Yes
4. Can't say

Q.

Which part of the flower is usually green in color?

1. Petals

2. Sepals

3. Stamen

4. Carpel

Q. Read the following statements and select the option that correctly identifies true (T) and false (F) ones.
(i) The number of petals and sepals in a flower is always equal.
(ii) Roots absorb water and minerals from the soil.
(iii) Stamen forms the innermost whorl of a flower.
(iv) Petiole is the short stalk attached to the leaf.
(v) Calyx and corolla form essential whorls of the plant.

1. (i) - T, (ii) - T, (iii) - F, (iv) - T, (v) - F
2. (i) - F, (ii) - T, (iii) - F, (iv) - T, (v) - F
3. (i) - F, (ii) - T, (iii) - T, (iv) - T, (v) - F
4. (i) - T, (ii) - T, (iii) - F, (iv) - F, (v) - T

Q. Spines on the rind of jack fruit represent

1. Carpels
2. Bracts
3. Stigmas
4. Styles

Q. State the order in which various parts of flower are arranged from outer side to inner side.

1. Carpel $\to$ Stamen $\to$ Petals $\to$ Sepals
2. Sepals $\to$ Petals $\to$ Stamen $\to$ Carpel
3. Sepals $\to$ Petals $\to$ Carpel $\to$ Stamen
4. Petals $\to$ Sepals $\to$ Stamen $\to$ Carpel

Q. Epipetalous and syngenesious stamens occur in

1. Solanaceae
2. Brassicaceae
3. Fabaceae
4. Asteraceae

Q.

Which part of the flower is usually green in color?

1. Petals

2. Sepals

3. Stamen

4. Carpel

Q. Modified hairy calyx is

1. Perianth
2. Epicalyx
3. Accrescent
4. Pappus

Q.

The calyx is green in color since they originate from a leaf.

1. False

2. True

Q. Coloured attractive structures of flower Bougainvillea are the

1. Calyx
2. Petaloid bracts
3. Foliage leaves
4. Epicalyx

Q. Explain the different types of calyx.

Q. Manual and flora are almost same just difference is that flora is for only plants and manuals for both plants and animals

Q. The essential organs of the flower are ..............

1. Calyx and Corolla
2. Androecium and Gynoecium
3. Calyx and Androecium
4. Corolla and Gynoecium