Botany

_____ 38. What is the function of sterile parts?
a. egg transport b. germination c. attraction of pollinators d. ovulation

_____ 39. If the anther of a flower were removed, which of the following would no longer be possible?
a. photosynthesis b. pollen production c. active transport d. fertilization by pollen from any plant

_____ 40. The style is the structure that connects the stigma to the _____.
a. anther b. sepal c. filament d. ovary

_____ 41. A period of decreased activity caused by structural and biochemical changes in a plant is called _____.
a. germination b. auxin c. primary root d. dormancy

_____ 42. Plants can respond to changing environmental conditions by the use of what kinds of chemicals?
a. vascular cambium b. tropisms c. hormones d. kudzus

_____ 44. Which of the following is NOT a cause of leaves changing color in the fall?
a. Days become shorter. b. The tree is getting old.
c. Cooler temperatures cause processes within the leaf to

2007-05-10 10:44:02 · 2 answers · asked by iloveyou 2

2007-05-10 03:34:13 · 2 answers · asked by Anonymous

I have always wondered why we do not see wild corn and bean plants growing. If these plants were staples of the native american diet before the white settlers, why don't we see the wild versions everywhere.
I never have seen the wild versions of any of our main food crops except wild carrots which don't look much like our carrots.
So were early people genetically engineering crops for hunderds of years? Where are all these wild versions of both European and American crops? Are they extremely different from modern versions? Why? If Mendel discovered the science of genetics in the middle ages had the first native versions of crop plants already disapeared well before that???

2007-05-09 18:32:17 · 1 answers · asked by inzaratha 6

2007-05-09 09:40:23 · 3 answers · asked by shar123 1

wat in the washing powder forms algae?

2007-05-09 07:18:39 · 5 answers · asked by iordan t 1

I know of Wells's "red weed" (from Mars), and Yggdrasil (from mythology), and the plants of Pern (from McCaffrey's stories), but... are there any others you might have heard of? Even normal plants with an important rôle in significant stories.

2007-05-09 04:45:40 · 9 answers · asked by ghart27 3

how the chemical fertilisers used in agriculture are harmful?

2007-05-09 02:55:12 · 9 answers · asked by Anonymous

1. What structures in a leaf perform photosynthesis?
2. What structure produces wood?
3. What structures are present in an eudicot root but missing in a stem?
4. The stamen contains which sex?
5. The carpel contains with sex?
6. Which sex produces microsporocytes and which produces megasporocytes?
7. What three parts are found in the seed?


THANKS SO MUCH FOR YOUR HELP!!!!

2007-05-09 01:48:13 · 2 answers · asked by Pretty Woman 4

Need to know is evergreens go through a cycle

2007-05-08 14:44:24 · 3 answers · asked by Anonymous

Yes I know fruits have natural sugars and all that, but what makes a tomato a fruit? How is a tomato any different than a Green Pepper? Just curious

2007-05-08 10:17:35 · 4 answers · asked by emirosesmommy@sbcglobal.net 2

I have bought a calibrachoa cabaret, upon closer inpection I realise it is not a petunia. Can anyone tell me it's common name?

2007-05-08 06:05:19 · 5 answers · asked by freybat42 1

assume that S represents the dominate traitof having long leavesand s represents the recessive short leafed trait in the parental generation you cross breeda homozygous long leaf with a homozygous short leafdraw a punet square showing this cross give the genotype and phenotypeof the f 1 generation

2007-05-08 03:24:44 · 3 answers · asked by momov4 1

i have a bamboo plant and all the leaves are going yellow... its been inside and outside... given the right amount of water and been in the sun and out... we have tryed everything... are the old leaves just dying off or is there sumfin rong wif it?

2007-05-07 21:52:33 · 3 answers · asked by misa.rose 1

2007-05-07 14:32:55 · 1 answers · asked by yakobian@sbcglobal.net 2

2007-05-07 13:15:59 · 4 answers · asked by Anonymous

What are some bacteria, viruses, and fungi that are helpful?What are some that are harmful?
And what are some that are deadly?

2007-05-07 07:01:50 · 4 answers · asked by gehonney 2

2007-05-07 07:01:14 · 6 answers · asked by Thoughts 1

plz answer !

2007-05-07 05:42:28 · 10 answers · asked by Anonymous

for science...need to know:
where (it) photosynthesis occurs,develops into fruit,absorb nutrients,recieves pollen,supports the flowers&leaves,protects flower buds,supports the anther,attract insect w/color,connects the stigma&ovary,and releases the pollen

2007-05-06 14:38:26 · 1 answers · asked by a-lexx TM 1

2007-05-06 10:33:34 · 2 answers · asked by Valencia M 1

2007-05-06 03:40:03 · 3 answers · asked by Pizza Man 2

nucellus
seed coat
endosperm
cotyleden

2007-05-06 00:46:20 · 2 answers · asked by Anonymous

2007-05-05 22:53:37 · 9 answers · asked by Anonymous

Im stumped with this question on my homework

2007-05-05 21:36:16 · 2 answers · asked by Anonymous

I am doing an experiment and need to know if the distance that a plant is placed from a light source affects the amount of oxygen it produces.

2007-05-05 10:55:38 · 5 answers · asked by Gustav Flatz 2

2007-05-05 07:57:07 · 6 answers · asked by ramzi 1

are there morrell mushrooms being found and where

2007-05-05 01:22:25 · 2 answers · asked by yakima DAN 1

Many fruits are the by-product of the mating of flowers, and most of them have seeds. (I don't know about coconuts though..)

But what about vegetables? Many of the vegetables that I know and love do not seem to have any seeds, so what is actually planted for such vegetables as peas, carrots, corn, and potatos?

Where do these seeds come from?

2007-05-04 18:27:35 · 2 answers · asked by Jim 7

excess oxygen yields N02 and H2O:
4NH3 (g) +7O2(g)-->4NO2(g) +6H2O(g)
The combustion of 28.8 of ammonia consumes___g of oxygen.
a. 94.9
b.54.1
c.108
d.15.3
e.28.8

2007-05-04 18:20:38 · 2 answers · asked by Sophia D 1

Does salvia cause perminent damage to the brain or body? Or is it stored by your body like acid.

2007-05-04 17:12:45 · 2 answers · asked by ROSE 2