Ask Question, Ask an Expert


Ask Biology Expert

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

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

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

Biology class - must be 250 words must cite worktest your

Biology class - must be 250 words must cite work. Test your knowledge of cells and cell processes by dragging the name to the appropriate organelle in the three interactive websites Prokaryotes Basic Structure, The Plant ...

Assignmentsimmunology1st assignmentsection ithe following

Assignments Immunology 1st Assignment Section I. The following Topics 1-3 (of 4) cover the cell isolation protocols from Units 1 & 2: Assigned Appendix readings; Isolation of human monocytes by double gradient centrifuga ...

Compare the values of q and keq is the physiological

Compare the values of Q and K'eq. Is the physiological reaction near or far from equilibrium? Explain. What does this experiment suggest about the role of PFK-1 as a regulatory enzyme?

Mutations can lead to missing or malformed proteins that

Mutations can lead to missing or malformed proteins that can lead to disease. A group of scientists in the United Kingdom have published a paper in the American Journal of Human Genetics stating that the average person h ...

Disscussion board biologybiotechnology allows the use of

Disscussion Board Biology Biotechnology allows the use of living organisms or their processes for human needs or purposes. Currently, this topic includes such general examples as cloning, stem cells (adult, umbilical cor ...

In the first stage of secondary succession grasses and

In the first stage of secondary succession, grasses and wildflowers abound. Why do these plants flourish where there used to be a forest?

1 nbspnbsp is the fundamental structural andnbsp

1. __________   is the fundamental structural and  __________      unit of all living organisms a. cell, functional b. cell, microscopic c. nucleus, functional d. DNA, microscopic 2. Match the scientists with their respe ...

Part 1 relevance of evolution medicine1 what is causing

Part 1: Relevance of Evolution: Medicine 1. What is causing the evolutionary arms race with pathogens? Provide an example to illustrate your answer. 2. How can we slow down antibiotic resistance? 3. What is the evolution ...

Orphan drugs for rare diseases1go Orphan Drugs for Rare Diseases 1. Go

Orphan Drugs for Rare Diseases 1. Go to: a. In the start date, type 01/01/2010. b. In the "Search Results", pull down "Only Approved Products". c. In the "So ...

Organic chemistry1 there is an attachement with 24

Organic Chemistry 1. There is an attachement with 24 molecules. Make three classification based on the function group. 2. Fill out the chart in the attactment. Complete the flowchart for the separation and isolation of: ...

  • 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

A cola-dispensing machine is set to dispense 9 ounces of

A cola-dispensing machine is set to dispense 9 ounces of cola per cup, with a standard deviation of 1.0 ounce. The manuf

What is marketingbullwhat is marketing think back to your

What is Marketing? • "What is marketing"? Think back to your impressions before you started this class versus how you

Question -your client david smith runs a small it

QUESTION - Your client, David Smith runs a small IT consulting business specialising in computer software and techno

Inspection of a random sample of 22 aircraft showed that 15

Inspection of a random sample of 22 aircraft showed that 15 needed repairs to fix a wiring problem that might compromise

Effective hrmquestionhow can an effective hrm system help

Effective HRM Question How can an effective HRM system help facilitate the achievement of an organization's strate