Corolla

Q.

Are all flowers symmetrical?

Q.

Keel is characteristic of the flowers of

1. Gulmohar

2. Calotropis

3. Bean

4. Cassia

Q. When petals are free, the corolla is called

1. polypetalous
2. gamopetalous
3. polysepalous
4. gamosepalous

Q. The correct floral formula of chilli is:

1. 
2. 
3. 
4. 

Q. Cleistogamous flowers are self-pollinated because [1 mark]
(A) they are bisexual flowers which do not open at all.
(B) they are bisexual and open flowers.
(C) they are unisexual.
(D) their stigma matures before the anthers dehisce.

Q.

What is the inflorescence of marigold?

Q.

Plants with ovaries having only one or a few ovules are generally pollinated by

1. Wind

2. Birds

3. Bees

4. Butterflies

Q. Read the assertion and reason carefully to mark the correct option in question.

Assertion: Datura, mustard and chilli shows actinomorphic/bilateral symmetry.

Reason: These flowers can be divided into two similar halves only in one particular vertical plane.

1. If both assertion and reason are true but reason is not the correct explanation of the assertion.
2. If assertion is true but reason is false.
3. If both assertion and reason are false.
4. If both assertion and reason are true and the reason is the correct explanation of the assertion.

Q. What is a flower? Describe the parts of a typical angiosperm flower.

Q. How many plants in the list given below have marginal placentation?
Mustard, Gram, Tulip, Asparagus, Arhar, Sunhemp, Chilli, Colchicine, Onion, Moong, Pea, Tobacco, Lupin

1. 3
2. 4
3. 5
4. 6

Q. Match the following columns.

Column I	Column II
A. Accessory organs	1. Calyx
	2. Corolla
B. Reproductive organs	3. Androecium
	4. Gynoecium

Q.

A stamen consists of two parts namely

1. Anther and filament

2. Filament and style

3. Anther and style

4. Stigma and style

Q. Monocarpellary ovary, diadelphous androecium and marginal placentation occur in

Q.

Most flowers have colorful sepals.

1. True
2. False

Q.

The standard petal of a papilionaceous corolla is also called

1. Carina

2. Vexillum

3. Corona

4. Pappus

Q.

why are papaya and date palm plants are said to be dioecious whereas cucurbits and coconut palms monoecious inspite of all of them bearing unisexual flowers

Q. In which type of inflorescence does the main axis terminates in a flower, hence is limited in growth and flowers are borne in basipetal succession ?

1. Cymose
2. racemose
3. both a) and b)
4. none of the above

Q. Heterosporous species have male and female cones as in

1. Pteris
2. Marchantia
3. Equisetum
4. Selaginella

Q.
Distinguish between petals and petaloids

Q. In a typical flower, the ovary is superior and other whorls are inferior. Such flower is said to be

1. polygamous
2. perigynous
3. hypogynous
4. epigynous

Q. Pollen grains of flower pollinated by wind or insects are not ............

1. Rough and sticky
2. Large and showy
3. Rough and dry
4. Smooth and dry

Q. When petals are free, the corolla is called

1. polypetalous
2. gamopetalous
3. polysepalous
4. gamosepalous

Q. Pollen grains of insect pollinated flowers are

1. Smooth and sticky
2. Smooth and rough
3. Rough and sticky
4. Rough and dry

Q. The second whorl of the flower is .............

Q. Give two contrasting traits between calyx and corolla.

Q. When calyx and corolla are not distinguishable, then member of their collective whorl termed as

1. Perianth
2. Sepal
3. Petal
4. Tepal

Q. Corolla with four diagonally arranged petals is

1. Vexillary
2. Cruciform
3. Caryophyllaceous
4. Gamopetalous

Q. Placentation is parietal in

1. Wheat

2. Brassica

3. China Rose
4. Sunflower

Q. Which one of the following families has features like bisexual, pentamerous, gamopetalous corolla with epipetalous stamens, sagittate anthers, subapocarpous ovary and a pair of follicles as their diagnostic characters?

1. Malvaceae
2. Leguminosae
3. Musaceae
4. Apocynaceae

Q. .................. flowers has trimerous symmetry.

1. Wheat
2. Maize
3. None of the above
4. Both A and B