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Katyanochek1 [597]
3 years ago
8

In order to be classified as a green plant, an organism should be eukaryotic, have double-membraned chloroplasts, cell walls, an

d go through the process of _______.
Land plants likely evolved from _______.
Plants have a life cycle that is called the alternation of generations. The two phases of this life cycle are the diploid stage and the _______ stage.
A plant structure that contains a full set of paired chromosomes is called a _______.
There are two key transport tissues in plants. _______ transports water from the roots to the rest of the plant, while phloem transports sugar and nutrients.
Match the term on the left to its definition on the right.

6. Angiosperm a. Has vascular tissue, but does not use seeds to reproduce
7. Fern b. Reproduces using cones
8. Moss c. Has no vascular tissue and uses spores to reproduce
9. Gymnosperm d. Reproduces by using flowers to attract pollinators
Respond to the following based on your reading.

The earliest land plants were liverworts, mosses and ferns. Using the information that you learned in the section, why do you think that these plants were successful in the humid and moist ancient environment? What about these plants makes them unable to thrive in areas with drier climates today? What makes angiosperms and gymnosperms more successful in these climates?
Biology
2 answers:
Eduardwww [97]3 years ago
7 0

Answer:

photosynthesis

green algae

haploid

sporophyte

xylem

d

a

c

b

Early land plants like mosses did not have vascular tissue. They must absorb their water directly from their surroundings, such as growing on rocks or trees that are moist. You find mosses in damp areas for this reason. They cannot grow in drier climates because they cannot pull water from the ground like vascular plants. Ferns are also suited to reproduce in more moist/humid climates because water must be present for their gametes (sperm and eggs) to find one another for fertilization. Seeds are adaptations by angiosperms and gymnosperms that allow for waterless fertilization. Either wind or animal pollinators help spread pollen and help the sperm reach egg cells for fertilization to occur. For that reason, these plants are better suited to survive in drier, modern climates.

Explanation:

PF make brainliest plz

e-lub [12.9K]3 years ago
3 0

Answer:

1. Photosynthesis

Explanation:

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Kruka [31]

Answer:

What is this off of, can you give me more information so I can help you

Explanation:

7 0
3 years ago
An exocrine gland that has an unbranched duct would be classified as a __________.
Firdavs [7]

Answer:

B) Multicellular Simple gland

Explanation:

Exocrine Glands:Glands that secrete their products onto the apical(or epithelia) surface directly or via epithelial ducts or tubes that are connected to the apical surface. These Exocrine glands are composed of highly specialized epithelial cells..

Exocrine glands can either be branched or Unbranched based on the arrangement.

*Multicellular simple glands*:Glands that have an *unbranched duct* into which cells secrete. Each secretory portion empties separately on an epithelial surface.

6 0
3 years ago
An action potential causes the release of neurotransmitters by:________.
seraphim [82]

Answer:

b) opening calcium pores in the membrane

Explanation:

The opening of calcium  ions channels facilitates the migration of vesicles containing neurotransmitters in the pre-synaptic neurons  to the tip of the post-synaptic membrane. at the <u>neuromuscular  junction </u>These neurotransmitters can either be <u>cholinergic or non-chorlinergic.</u>   <u>At the tip  of the pre-synaptic membranes the vesicles empty their neurotransmitter contents into the synapse.</u>

The neurotransmitters,  diffuse through the neuromuscular junction to bind  with the receptors on the <u>post-synaptic membrane on the post-synaptic neuron.</u> This  stimulates opening of<u> ligand gated sodium ions,</u> and sodium ions  diffuse into the post-synaptic neuronal membrane, to cause <u>depolarization</u>. if the stimulus is  up to the threshold levels   it  generate action potential.

Therefore , more calcium ions channels opening produces; more diffusion of neurotransmitters;leading to opening of more sodium channels for depolarization; and IPSP or EPSP  generation.

5 0
3 years ago
You are a biologist examining local bird populations in your area. You have noted that there appears to be several varieties of
Sladkaya [172]
Genetic diversity i would say


5 0
3 years ago
Dihybrid crosses
Darina [25.2K]

Explanation:

The phenotypes and genotypes of the progeny can be determined by a dihybrid cross of the parents.

The heterozygous male will have the genotype 'SSww' and the heterozygous female will have the genotype 'ssWW'.

When crossed, the F1 offsprings will have a hybrid genotype of 'SsWw'. These offsprings are heterozygous with spotted skin and wooly hair.

On self-crossing of the F1 hybrids, we find four different combinations of the alleles- SW, Sw, SW and sw. The probability of getting each of these combinations is 1/4.

Hence, the probability of any dihybrid type is 1 out of the 16 possible genotypes. Using Punnet square, we find

9 SSWW: 3 SSww: 3 ssWW : 1 ssww

This is the phenotypic ratio of the offsprings.

The ratio of the possible genotypes will be 1:2:1:2:4:2:1:2:1.

8 0
2 years ago
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