Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

A hormone induced dropping of leaves, flowers, fruits or other parts of a plant is:
A. Abscission
B. Petiolaria
C. Assimilation
D.Pollination

A seed leaf is a:
A. seed
B. cotyledeon
C. monocot
D. leaf primordia

The fusion of a sperm nucleus with the egg nucleus and the fusion of another sperm nucleus with the nuclei of the endosperm is:
A. fertilization
B. pollination
C. transpiration
D. translocation

A mature ovary, with or without accessory parts is a:
A. root
B. fruit
C. flower
D. seed

Resumption of growth after dispersal, dormancy, or both is called:
A. germination
B. abscission
C. transpiration
D. translocation

The enlarged base of one or more carpels is the :
A. ovary
B. fruit
C. stigma
D. style

The tissue mass in a plant ovary that develops into a seed is the:
A. ovule
B. pollen
C. petiole
D. stigma

Immature or mature, sperm bearing male gametophyte of a Gymnosperm or Angiosperm is a :
A. pollen grain
B. ovule
C. anther
D. stamen

Arrival of a pollen grain on the landing platform (Stigma) of a carpel is called:
A. fertilization
B. pollination
C. transpiration
D. translocation

A mature ovule with an embryo sporophyte inside and integuments that form a seed coat is a :
A. ovule
B. megaspore
C. seed
D. pollen grain

Cells in sacs in the anthers undergo meiosis and cytoplasmic divisions to produce haploid _____________ ,which go on to become pollen grains.
A. megaspores
B. microspores
C. mother cells
D. gerbels

The flowers of species that have both male and female parts are called ______________ flowers.
A. complete
B. perfect
C. common
D. real

Plants exhibit _____________ when they turn their leaves or stems toward the light.
A. phototropism
B. photoauxin
C. light dependency
D. lightdays

What is the name of the blue-green pigment molecule that is one of the "alarm buttons" for some biological clocks in plants?
A. hirudin
B. xanthophyll
C. chlorophyll
D. phytochrome

A________________ rhythm is a biological activity that recurs in cycles of 24 hours or so.
A. circadian
B. biological
C. dermatome
D. hourly

What plant hormone is redistributed within a plant to cause the bending of plants in response to light?
A. giberrelins
B. auxin
C. photons
D. xanthophylls

Generally, gravity-sensing mechanisms are based on _________ which are heavy or dense particles that shift position in response to changes in a cell's orientation in space.
A. statocysts
B. statolyths
C. gravotrips
D. stones

Tendrils display ____________ when they shift their direction of growth upon contacting a solid object.
A. phototropism
B. gravitropism
C. touhotropism
D. thigmotropism

Generally, gravity-sensing mechanisms are based on
a. phytochrome inactivation
b. statolith movement
c. accumulation of ethylene
d. differential gene expression

A perfect flower
a. lacks a stamen
b. lacks a carpel
c. has both male and female reproductive parts

Double fertilization occurs only in
a. tissue cultures
b. angiosperms
c. monocots
d. dicots

When plants shift their growth in response to contact with an object, they show
a. gravitropism
b. thigmotropism
c. photoperiodism
d. phototropism

Which of the following statements about endosperm is not correct?
a. it is formed in the stamens
b. it is triploid
c. it serves as nutrition for the embryo
d. it is present only in angiosperms

A poinsettia, which must be guarded from excess light in order to induce flowering, is an ex of a
a. day-neutral plant
b. short-day plant
c. long-day plant

A(n) ______ is a multiple fruit; it is derived from a number of individual flowers that were grouped close together.
a. apple
b. strawberry
c. pineapple
d. acorn

When a plant stops growing under conditions that seem (to us) suitable for growth, we say that it has entered into :
a. senescence
b. dormancy
c. abscission
d. germination

Which of the following promotes fruit ripening and abscission?
a. indolacetic acid (IAA)
b. gibberellins
c. ethanol
d. none of the above

Phytochrome :
a. is a blue-green plant pigment
b. is interconverted between active and inactive forms by variations in the wavelength of light
c. plays a role in maintaining plant circadian rhythms
d. all of the above

Which of the following is not a fruit?
a. banana
b. tomato
c. potato
d. hazelnut

What plant pigment is suspected of playing a major role in phototropic bending?
a. phytochrome
b. chlorophyll
c. flavoprotein
d. phycobilin

The "foolish seedling" effect results from exposure of a plant to an artificially high level of
a. auxin
b. phytochrome
c. ethylene
d. gibberellin

Indolacetic acid (IAA) is a naturally occurring
a. auxin
b. pigment
c. gibberellin
d. cytokinin

In ______, a new plant is induced to arise from a parent cell that has not become irreversibly differentiated.
a. parthenogenesis
b. genetic engineering
c. tissue culture propagation
d. sexual reproduction

Strawberries can reproduce vegetatively by
a. parthenogenesis
b. runners
c. rhizomes
d. tubers

In ______, the embryo absorbs nutrients from the endosperm and stores them in its cotyledons.
a. corn
b. wheat
c. rice
d. cherries

A ______ is a localized region of still embryonic cells that retain the potential for division.
a. cotyledon
b. corm
c. meristem
d. bulb

When a pollen tube reaches an ovule, it penetrates the embryo sac and delivers
a. a single sperm
b. two sperm
c. the endosperm mother cell
d. an egg

Abscisic acid
a. is a type of auxin
b. promotes cell elongation
c. induces bud dormancy
d. causes the foolish seedling effect

Cytokinins
a. are responsible for circadian rhythms
b. stimulate cell division
c. are synthesized in leaves and transported to roots
d. are activated by red light

Food distributors expose fruit to ethylene in order to
a. retard spoilage
b. kill insects
c. promote ripening
d. prevent seed formation

Biology, Academics

  • Category:- Biology
  • Reference No.:- M929011

Have any Question? 


Related Questions in Biology

Antimicrobial resistance and natural selectionthe use of

Antimicrobial Resistance and Natural Selection: The use of antimicrobial drugs began during the World War II era. After more than 50 years of widespread use, many antimicrobial drugs have become ineffective. Health autho ...

1 define partial pressure and how it is calculated2

1. Define partial pressure and how it is calculated. 2. Compare the partial pressure at sea level and at the top of Mt. Everest. Explain why, if oxygen is still at the same concentration in both locations, the partial pr ...

A man and a woman both have polydactyly ie six fingers on

A man and a woman both have polydactyly (i.e., six fingers on each hand), a trait which is determined in this example by a single gene. They have four children, none of whom have polydactyly. What is the probability thei ...

Healthy people 2020 is a framework to assist communities in

Healthy People 2020 is a framework to assist communities in preventing disease and promoting health. Search the scientific literature and find a research study related to one of the focus areas identified by Healthy Peop ...

Knowing that acid rain has a ph of 2 - 3 would you conclude

Knowing that acid rain has a pH of 2 - 3 would you conclude that crop species with a narrow soil pH range are in trouble? Explain why, or why not, using scientific reasoning. Is acid rain a problem for plant species and ...

In a plant the allele that results in violet flowers v is

In a plant, the allele that results in violet flowers (V) is dominant to one that results in white flowers (v); at another locus, the allele that makes prickly seed capsules (P) is dominant to one that results in smooth ...

Please read instructions carefully 4-5 body page paper must

PLEASE READ INSTRUCTIONS CAREFULLY: 4-5 body page paper, must include a title and reference page, CITE PROPERLY,  I run all papers through turnitin website before i accept them which means you paper can only have 10-15% ...

Lets discuss the role of the intestinal microbiota in the

Let's discuss the role of the intestinal microbiota in the maintenance of health and the many opportunistic pathogens that cause disease when the delicate balance of normal microbiota in this region of the body is distur ...

Cyclin-dependent kinases are special molecules that

Cyclin-dependent kinases are special molecules that facilitate the progression of a cell through the cell cycle. Many molecules such as p53 regulate the cell cycle. An unregulated cell cycle can lead to rapid growth of t ...

Microbiology1 for what specific purpose was gram staining

Microbiology 1. For what specific purpose was gram staining developed for? what is it used for today? 2. Why is the presence of air bubbles a sign of contamination? 3. Why is a gram stain helpful when monitoring bacteria ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen