Unit 4 Quiz 2

A successful scion will produce the product of the rootstock with greater quality. True False

False

An advantage of grafting is to increase the quality of the rootstock. True False

False

Asexual reproduction requires gametes but not fertilization. True False

False

Grafting is an ancient practice. True False

True

Four principal advantages of asexual reproduction are:

reproduction at a rapid rate reproduction in harsh climates reproduction with only one parent reproduction genetically of identical offspring

A _____ is a horizontal stem at or just beneath the surface of the ground which can give rise to roots or stems.

rhizome

A stem at or just beneath the surface of the ground which can give rise to aerial stems or roots

rhizome

A successful cutting requires that the new plant acquire its own _______.

root

A cutting made from the root of a plant which develops adventitious buds and grows into a new plant

root cutting

The portion of a plant with the root system used in grafting

root stock

The part of a desired plant inserted into rootstock during grafting is called the _______.

scion

The portion of a plant with buds, that is placed into the stock by grafting or budding

scion

A small, resistant cell that can grow into a new organism. They may be produced either by meiosis or mitosis

spore

The portion of the vascular plant which has the majority of the methods of asexual reproduction occurring in it is called the _____.

stem

A cutting of stem tissue used to grow a new plant

stem cutting

A common fruit that can only reproduce asexually is Thompson seedless grapes. True False

True

Asexual reproduction always yields offspring which are identical to their parent. True False

True

If you develop a particular flower which cannot be reproduced from seeds, it could be preserved by grafting. True False

True

Nearly all plants can be reproduced asexually. True False

True

A group of organisms attached to one another after undergoing asexual reproduction from a common parent

colony

A technique in which a part of the stem or a bud is inserted into a plant with a good root system

grafting

A spore that develops by mitosis

mitospore

The process of a parent cell dividing into a large number of genetically identical cells all at once is known as _____ .

multiple fission

The act of propagating or establishing and growing new plants

propagation

A one- or few-celled organism with chromosomes

protist

Organisms break into two or more parts and then each part grows into a new individual.

regeneration

When an organism of many cells breaks up into two or more parts, and when these parts survive to produce a new organism, reproduction occurs by _______.

regeneration

One-celled

unicellular

Occasionally asexual reproduction can cause undesirable proliferation of an organism. True False

True

A root which develops from stem or leaf tissue instead of root tissue is said to be _______.

adventitious

Refers to the appearance of buds or roots from tissue which is not bud or root tissue

adventitious

A phenomenon in which a one-celled organism divides by mitosis into two organisms

binary fission

The simplest form of asexual reproduction is called _____ .

binary fission

A kind of asexual reproduction involving the growth of a new individual from part of an older organism

budding

A technique which involves reducing the scion to a singular bud in grafting

budding

Offspring which arise as a contiguous outgrowth of the parent is called _______.

budding

A plant structure with enlarged leaf bases and stored food surrounding a central bit of fleshy stem tissue

bulb

An onion or daffodil reproduces by means of an underground structure called a ______.

bulb

The central portion of a starfish. The arms of a starfish radiate from the ______.

central disk

A special kind of asexual spore found in many kinds of fungi

conidia

A short, solid, enlarged underground stem used for food storage and for asexual reproduction

corm

A technique in horticulture using a cutting made from a leaf or leaf tissue to grow a new plant

leaf cutting

A _______ is a spore that develops by mitosis.

mitospore

(Select all that apply.) Cuttings used for growing plants may be taken from which of the following? stems roots flowers leaves

stems roots leaves

A _______ is a stem growing from a plant that periodically produces new stems and leaves on one side and roots on the other.

stolon

A stem which grows out periodically producing new stems and leaves on one side, and roots on the other

stolon

A fleshy, enlarged end of a rhizome or stolon is called a _____.

tuber

A fleshy, enlarged stem of a rhizome or stolon. It has buds and can grow new plants

tuber

"And they also, if they abide not still in ______ , shall be ______ in: for God is able to ______ them in again. For if thou wert cut out of the olive tree which is wild by nature, and wert graffed contrary to nature into a good olive tree: how much more shall these, which be natural branches, be graffed into their own olive tree." Romans 11:23-24

unbelief grafted graft

Has true conductive tissues within it. It usually has true roots, stems, and leaves

vascular plant

The act of propagating or establishing and growing new plants

vegetative propagation

The new plant produced by the technique of layering must remain attached to the stem of the original plant. True False

False

Colonies occur when an animal produces many young asexually and they become detached from the original (parent) animal and result as an independent mass. True False

False

Large variations in a crop may be developed by employing asexual reproduction. True False

False

______ is a type of cell division used in asexual reproduction.

Mitosis

_______ is the division of a parent cell into a number of daughter cells all at once.

Multiple fission

A cell undergoes many mitotic divisions in the nucleus and a number of daughter cells are produced all at once

multiple fission

A short, vertical, solid, or fleshy stem possessed by gladiolus and which is used in reproduction is termed a _______.

corm

All of the following are basic types of asexual reproduction in lower organisms except: regeneration binary fission budding egg-laying multiple fission reproduction by spores

egg-laying

The technique of developing roots on a stem of a plant while that stem is still attached to the parent plant

layering