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Test: Sexual Reproduction in Flowering Plants - 1 - Question 1

In some plants anther and stigma mature at same time this condition is called?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 1
  • Homogamy: The anther and stigmas of a bisexual flower mature simultaneously.
    The pollen grains reach the mature stigma either by contact, wind, gravity, raindrop, or even insects.
  • Self-pollination brought about by contact is called autogamy and remaining agencies perform indirect autogamy.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 2

Which of the following plant contain unisexual flower?  

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 2

The flower which contains either male or female reproductive part is called a unisexual flower.
Papaya plant produces either male or female flower in separate plants.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 3

During Hybridisation process anther of bisexual flower is removed before it dehisces is called?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 3

Hybridisation is the process to develop hybrid plants with desired traits. In bisexual flower, the stamen is removed with the help of forceps to avoid self-pollination. This method is called emasculation.
ENHANCEMENT IN FOOD PRODUCTION PLANT BREEDING Plant breeding? What is mean  by plant breeding? Growing various variety of plants?

Test: Sexual Reproduction in Flowering Plants - 1 - Question 4

Which of the following occupies central position in flower?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 4

Bisexual flower have four main parts. Pistil or carpel is located at center followed by stamen, carpel and sepals. Pistil contains stigma, style and ovary.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 5

Insect pollinated flowers are _________.

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 5

The flower in which pollen grain is transferred from anther to stigma of anther flower by insects are colorful to attract insects and contain nectar.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 6

What is the function of germ pore?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 6
  • A germ pore is a small pore in the fungal pore’s outer wall from which the germ tube then exits at germination. If its location is taken into consideration then it can be apical or eccentric.
  • Germ pore plays an essential part in the fertilization of plants. It helps in pollen tube formation and releases the male gamete during fertilization.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 7

A typical angiosperm embryo sac at maturity is _________.

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 7

Angiospermic embryo sac is 8-nucleate but 7-celled at maturity. This includes 3- celled egg Synergids, 3 antipodal cells and 2 polar nuclei.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 8

Inside the ovary, the ovule is attached to the placenta by means of:

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 8

Ovule/s are located inside the ovary. The point of attachment of the ovule to the ovary is called the funicle. Funicle extends to hilum as stalk.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 9

The female gametophyte in angiosperm is:

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 9

The female gametophyte in angiosperms is called Embryo sac. It contains egg apparatus, antipodal cells and polar nuclei. After fertilisation embryo sac changes into seed.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 10

In ovule, archesporial cell differentiates from nucellus:

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 10

In ovule female gamete is formed at micropylar end and three antipodal cells at chalazal end. The two central nuclei are called polar bodies that fuse with one of male gamete to form endosperm.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 11

Maize is:

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 11

Maize flower is pollinated by winds. The transfer of pollen grain from anther to stigma by wind is known as anemophilus.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 12

Which of the following plant is not pollinated by water?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 12

Lotus is an aquatic plant but the flower of lotus is outside and above the water surface. So, it cannot be pollinated by water. It is generally pollinated by insects.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 13

Entomophilous flower are pollinated by:

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 13

The transfer of pollen grain from anther to stigma is called pollination. Pollination is caused by winds, insects, water, and some other means. Insect pollinated flowers are called Entomophilous flowers.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 14

In most of the angiosperms, pollen grains are shed at _________.

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 14

About 60% of angiosperms, pollen grains are shed at two celled stage. The larger cell is called vegetative cell and the smaller one is called generative cell. Each generative cell produces two male gametes.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 15

The anther is a four sided structure consisting of four _________ located at the corner. 

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 15

Anther is bilobed structure at the tips of stamen. Each lobe consists of two theca. Each theca change into microsporangium. Anther forms four sided structure having four microsporangia in which pollen grains are formed.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 16

In which of the following plants endosperm is completely used up by developing embryo?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 16

Endosperm is present around the growing embryo. It provides nutrition to the growing embryo. In leguminous plants, it is completely consumed by the embryo and nothing remains in seed as in pea.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 17

Endosperm type in which first division of primary endosperm nucleus and few subsequent division are not accompanied by wall formation is called?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 17

PEN (primary endosperm nucleus) divides into two nuclei and subsequent division of nucleus produce large number of nucleus without cell wall formation. These types of endosperm are called free nuclear type of endosperm.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 18

Number of nuclei participating in double fertilisation is?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 18

Double fertilisation involves fusion of one male gamete with egg during Syngamy and fusion of two polar nuclei with other male gametes. So, total 5 nuclei are involved in double fertilisation.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 19

The cotyledon of maize grain is technically called as?  

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 19

Maize grain is monocotyledonous, having a single cotyledon. This cotyledon is also called scutellum.

Examples Of Achene Fruits

Test: Sexual Reproduction in Flowering Plants - 1 - Question 20

The portion of embryonic axis of monocots above the level of attachment of scutellum is called as? 

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 20

The part of axis above the level of attachment of scutellum is called epicotyl. It has as shoot apex and few leaf primordia enclosed in a hollow foliar structure called coleoptile. Epiblast represents rudiments of second cotyledon.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 21

The fruits which develops without fertilization are called as?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 21

The seedless fruit develops without fertilisation by using some plant hormones. The fruit so formed are called parthenocarpic.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 22

Placenta is located inside the _________.

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 22

Placenta is located inside the ovarian cavity. It help in transport of nutrient to megasporangium or ovule. Ovule is attached to placenta by means of stalk called funicle.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 23

Coconut fruit is dispersed by _________.

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 23

Seeds dispersed by water are contained in light and buoyant fruit, giving them the ability to float. Coconuts are well known for their ability to float on water to reach the land where they can germinate. The coconut seed is especially well adapted to increase its range by the method of ocean dispersal. The seed floats when its outer layers dry out. The buoyant coconuts drift on ocean currents and end up on tropical beaches where they germinate and take root.

Test: Sexual Reproduction in Flowering Plants - 1 - Question 24

Which of the following is an example of false fruit?

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 24
  • True Fruit: A true fruit is one that develops only from the ovary. 
    Example: Mango, Coconut, Zizyphus etc.
  • False Fruit or Pseudocarp: In some fruits, it is not the ovary that forms the fruit. In fact, some other parts of the flower, like the thalamus, inflorescence, calyx are modified to become a part of the fruit. These types of fruit are called false fruits. 
    Example: Apple, Strawberry etc.
Test: Sexual Reproduction in Flowering Plants - 1 - Question 25

Study of fruits and their cultivation is known as_________.

Detailed Solution for Test: Sexual Reproduction in Flowering Plants - 1 - Question 25

The study of fruits and their cultivation is known as pomology. This is one of the fasted growing fields of horticulture combined with genetically modified fruits.

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