ehd123

Explain what physiological adaptations permit sleep movements in plants?

Explain what physiological adaptations permit sleep movements in plants?

Explain what physiological adaptations permit sleep movements in plants?

Muskaan   1211   1 Reply

krorange

what is the difference between abscisin, dormin, AB and Abscisic acid?

what is the difference between abscisin, dormin, AB and Abscisic acid?

what is the difference between abscisin, dormin, AB and Abscisic acid? In which system were each discovered?

Muskaan   1015   2 Replies

milly

Monocot floral parts usually occur in mutiples of?

Monocot floral parts usually occur in mutiples of?

Monocot floral parts usually occur in mutiples of?

ty93   2147   1 Reply

how_mendel

What is known about origin of ABA in plants?

What is known about origin of ABA in plants?

What is known about origin of ABA in plants? What major precursor in involved in ABA formation and where does this reaction take place in the cell?

Muskaan   537   1 Reply

barathvaj

Ethylene

Ethylene

What controls the production of ethylene in plants.

Muskaan   494   1 Reply

lewis

Founder effect

Founder effect

Would the Yellowstone Wolf be a good example of founder effect?

oaktree   1046   4 Replies

oaktree

Plz Help!

Plz Help!

Why would molecules of a heterodimer be stored in different areas of the leaf

muski   1063   N/A

muski

Yolk and endosperm share a number of functions. Which of the following does not

Yolk and endosperm share a number of functions. Which of the following does not

Yolk and endosperm share a number of functions. Which of the following does not describe a similarity between them?

ppk   1651   2 Replies

bio_man

What is this? Is it some type of egg sack?

What is this? Is it some type of egg sack?

I live in the Santa Cruz Mountains in California.  We live on a lake called Lexington Reservoir.  For the past few weeks, the lake has been draining to replenish the underground aquifer.  This morning, on one of my regular walks around

jondunno   1153   5 Replies

Cbranson

Animal biology

Animal biology

The radiata are characterised by which of the following features?
A) Three body layers.
B) Cephalisation.
C) Gastrovascular cavity.
D) Organ level organisation.
E) Nervous system with ganglia and ventral nerve cords.

masor916   676   1 Reply

how_mendel

The floral meristem in flowering plants develops from the shoot apical meristem,

The floral meristem in flowering plants develops from the shoot apical meristem,

The floral meristem in flowering plants develops from the shoot apical meristem, which usually produces leaves. Which floral part is not a modified leaf?

ppk   1995   1 Reply

how_mendel

Organs in developing flowers include all of the following except ________.

Organs in developing flowers include all of the following except ________.

Organs in developing flowers include all of the following except ________.

ppk   1441   1 Reply

how_mendel

If the expression of the PHAN gene is blocked in plants, what will be the likely

If the expression of the PHAN gene is blocked in plants, what will be the likely

If the expression of the PHAN gene is blocked in plants, what will be the likely result?

ppk   2165   1 Reply

how_mendel

Meristematic tissue cells in plants are most similar to which kind of cells in a

Meristematic tissue cells in plants are most similar to which kind of cells in a

Meristematic tissue cells in plants are most similar to which kind of cells in animals?

ppk   4286   1 Reply

how_mendel

why do we call pea plant (pisum sativum) a model organism? why not use any other

why do we call pea plant (pisum sativum) a model organism? why not use any other

why do we call pea plant (pisum sativum) a model organism? why not use any other plant organism as our model.

muski   1793   1 Reply

MendelRules

Help Plz!

Help Plz!

What are they? What do they do?
1: Auxin (IAA)
2: Kinetin
3: Gibberellin (GA)

muski   637   1 Reply

duddy

The basal cell in a plant embryo ________.

The basal cell in a plant embryo ________.

The basal cell in a plant embryo ________.

ppk   1830   1 Reply

how_mendel

The auxin produced in Arabidopsis embryos and Bicoid protein produced in Drosoph

The auxin produced in Arabidopsis embryos and Bicoid protein produced in Drosoph

The auxin produced in Arabidopsis embryos and Bicoid protein produced in Drosophila embryos have what similar function?

ppk   2928   1 Reply

how_mendel

In the early plant embryo, cells divide asymmetrically. Which structure does not

In the early plant embryo, cells divide asymmetrically. Which structure does not

In the early plant embryo, cells divide asymmetrically. Which structure does not result from divisions of the apical cell?

ppk   2017   1 Reply

how_mendel

Auxin has an effect on plant embryos much like the Bicoid protein in Drosophila.

Auxin has an effect on plant embryos much like the Bicoid protein in Drosophila.

Auxin has an effect on plant embryos much like the Bicoid protein in Drosophila. If auxin were added to a culture of embryonic root cells, what would be the likely result?

ppk   1857   1 Reply

how_mendel

The monopterous gene in Arabidopsis encodes a protein that is similar in its fun

The monopterous gene in Arabidopsis encodes a protein that is similar in its fun

The monopterous gene in Arabidopsis encodes a protein that is similar in its function to which animal protein?

ppk   868   1 Reply

how_mendel

Plant embryos cannot undergo gastrulation. What ensures the correct positioning

Plant embryos cannot undergo gastrulation. What ensures the correct positioning

Plant embryos cannot undergo gastrulation. What ensures the correct positioning of cells during plant embryogenesis?

ppk   2074   1 Reply

how_mendel

In flowering plants, an event known as double fertilization occurs when ________

In flowering plants, an event known as double fertilization occurs when ________

In flowering plants, an event known as double fertilization occurs when ________.

ppk   1638   1 Reply

how_mendel

Of the following developmental processes, which is not undergone by plant embryo

Of the following developmental processes, which is not undergone by plant embryo

Of the following developmental processes, which is not undergone by plant embryos?

ppk   1293   1 Reply

how_mendel

All of the following statements are true of the endosperm except that ________.

All of the following statements are true of the endosperm except that ________.

All of the following statements are true of the endosperm except that ________.

ppk   1786   3 Replies

how_mendel

Interactions between proteins on the surface of the pollen grain and on the surf

Interactions between proteins on the surface of the pollen grain and on the surf

Interactions between proteins on the surface of the pollen grain and on the surface of the stigma are necessary for fertilization to proceed. What is the correct sequence of events that follow this interaction?

ppk   1095   1 Reply

chemb

Many flowering plant species have elaborate mechanisms to prevent an individual'

Many flowering plant species have elaborate mechanisms to prevent an individual'

Many flowering plant species have elaborate mechanisms to prevent an individual's pollen from fertilizing its own egg cells. Why?

ppk   2034   1 Reply

chemb

One unique feature of fertilization in flowering plants compared with animals is

One unique feature of fertilization in flowering plants compared with animals is

One unique feature of fertilization in flowering plants compared with animals is that

ppk   3357   1 Reply

chemb

What is a standard curve and why do we use it?

What is a standard curve and why do we use it?

What is a standard curve and why do we use it?

muski   30531   2 Replies

duddy

Help Plz!

Help Plz!

Why is the importance of glycerol adding to the SDS sample buffer?

muski   666   1 Reply

how_mendel

Genetics question

Genetics question

a cross of pea plants the f1 are: 3/8 yellow round 3/8 yellow wrinkled 1/8 green round 1/8 green wrinkled. what were the phenotype and genotype of the parents?

calcguy   801   1 Reply

duddy

Please help!

Please help!

In a cross of pea plants the F1 are: 3/8 yellow round 3/8 yellow wrinkled 1/8 green round 1/8 green wrinkled?
what were the phenotype and genotype of the parents?

calcguy   558   1 Reply

calcguy

Fern Life Cycle

Fern Life Cycle

Label the parts of the fern life cycle. Indicate which have haploid nuclei and which have diploid nuclei.

nancy   1217   2 Replies

Moses

Which of the following are most responsible for supporting mature, nongrowing pa

Which of the following are most responsible for supporting mature, nongrowing pa

Which of the following are most responsible for supporting mature, nongrowing parts of the plant?     
A) trichomes
B) sieve-tube elements
C) collenchyma cells
D) parenchyma cells
E) tracheids and vessel elements

ppk   7781   3 Replies

duddy

How do you calculate species abundance and diversity?

How do you calculate species abundance and diversity?

this is the sample population:
ants:9
spiders:1
pill bugs:4
grasshoppers:1

For diversity, I think the formula is D=(S-1)/InN, but im not sure so what forumulas would i use to calcuate abudance and diversity?

calle   1573   2 Replies

calle

Experimental design help please

Experimental design help please

Experimental design: Do you think it will be necessary to use a new Daphnia for each test substance? Discuss.Thank you

NAZ   764   1 Reply

bio_man

most of the water that enters the plant . ..

most of the water that enters the plant . ..

Most of the water that enters the plant . .
a. leaves the plant through the root system
b. is lost through transpiration
c. remains in the plant to form the high concentration of water in plant tissue
d. remains in the plant to fu

heather9980   1044   1 Reply

duddy

Most of the macronutrients and micronutrients function as

Most of the macronutrients and micronutrients function as

Most of the macronutrients and micronutrients function as

a. food for plants
b. structural components for cells
c. elements needed for the development of mycorrhizae
d. enzyme activators

have no clue on this one~!

heather9980   1080   1 Reply

duddy

Plants contain meristems whose major function is to

Plants contain meristems whose major function is to

Plants contain meristems whose major function is to     
A) produce flowers.
B) attract pollinators.
C) photosynthesize.
D) produce more cells.
E) absorb ions.

ppk   3705   2 Replies

jesshope0923

Short Answer Questions about Animal Behaviour

Short Answer Questions about Animal Behaviour

3. For each of the following traits, put NS if the trait is largely a product of natural selection and SS if the trait is largely a product of sexual selection. (5 marks)

a. The donation by a mother elephant seal of special nutrients and b

mushroomX_X   3560   1 Reply

mushroomX_X