Biology-13 Reproduction in Plants PreQuiz

________ is the process of reproduction involving a single parent that results in offspring that are genetically identical to the parent.

• asexual reproduction

• sexual reproduction

• fertilisation

• meiosis

Answer explanation

Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and physically similar to the parent or an exact clone of the parent.

Tags

NGSS.MS-LS3-2

_____ are the leaflike parts that cover and protect the flower bud.

• sepals

• petals

• anther

• stigma

Answer explanation

A sepal is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom.

The _____ is the pollen-producing male reproductive organ of a flower, consisting of an anther and filament.

• stamen

• filaments

• anther

• stigma

Answer explanation

The stamen (plural stamina or stamens) is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium. These are the male parts of the flower. Each stamen is made up of a long filament, with an anther at the top. The anthers contain pollen grains, which contain the male gametes.

Tags

NGSS.MS-LS1-4

The ____ is the part of the pistil where pollen germinates.

• stamen

• filaments

• anther

• stigma

Answer explanation

The stigma receives pollen and it is on the stigma that the pollen grain germinates. Often sticky, the stigma is adapted in various ways to catch and trap pollen with various hairs, flaps, or sculpturings.^[3] The pollen may be captured from the air (wind-borne pollen, anemophily), from visiting insects or other animals (biotic pollination), or in rare cases from surrounding water (hydrophily). Stigma can vary from long and slender to globe shaped to feathery.^[4] The stigma (pl stigmas or stigmata)^[1] is the receptive tip of a carpel, or of several fused carpels, in the gynoecium of a flower.

The _____ the part of a stamen that contains the pollen.

• stamen

• filaments

• anther

• stigma

Answer explanation

The anther is the part of a stamen that contains the pollen.

Tags

NGSS.MS-LS1-4

The _____ is the female reproductive organ of a flower, consisting of the stigma, style, and ovary.

• carpel

• ovary

• stigma

• dormant

Answer explanation

The carpel is the female reproductive organ of a flower, consisting of an ovary, a stigma, and usually a style. It may occur singly or as one of a group.

Tags

NGSS.MS-LS1-4

_____ is the transfer of pollen from male reproductive structures to female reproductive structures in plants.

• pollination

• ovule

• anther

• filament

Answer explanation

Pollination is the act of transferring pollen grains from the male anther of a flower to the female stigma. The goal of every living organism, including plants, is to create offspring for the next generation. One of the ways that plants can produce offspring is by making seeds.

Tags

NGSS.MS-LS1-4

When a seed has almost no metabolic processes taking place is is said to be _____.

• dormant

• active

• hyperactive

• deficit

Answer explanation

Seed dormancy is the state in which seed is unable to germinate, even under ideal growing conditions (Merriam-Webster). Because dormancy can be broken by most ideal growing conditions (different and specific for each species), the seeds germinate when they are the most likely to flourish. Dormancy is a period of arrested plant growth. It is a survival strategy exhibited by many plant species, which enables them to survive in climates where part of the year is unsuitable for growth, such as winter or dry seasons.

The _____ is the stalk of a flower's carpel, with the ovary at the base and the stigma at the top.

• style

• stigma

• anther

• filament

Answer explanation

The style is a narrow upward extension of the ovary, connecting it to the stigmatic papillae. Occasionally it may be absent, in which case the stigma is described as sessile. Styles are generally tube-like—either long or short.

Tags

NGSS.MS-LS1-4

The _____ attaches the anther to the rest of the flower.

• style

• stigma

• anther

• filament

Answer explanation

The filament supports the anther, which is where pollen develops. The word filament is from the Latin word filum, which means "thread." Filament, in fact, can be a synonym for thread.

Tags

NGSS.MS-LS1-4