Hurry, come in if you like creatures

10 Sunlight, suitable temperature, nutrients, carbon dioxide and oxygen, a certain living space and the characteristics of the plant itself.

11 For details, see the 7th grade biology book (Renjiao Edition), the environmental conditions that affect the germination of seeds seem to affect water, air and temperature.

Temperature, light, mineral elements, air.

1. The baby seahorse is born to the father of the seahorse;

2. The whales that live in the sea are not fish;

3. Ostriches have wings but can't fly;

4. Flying bats are mammals;

5. Birds turned out to be descendants of dinosaurs.

Noodle tree, oil tree, royal lotus, cannibal tree. Piranhas. Traveler's banana.

The energy substance is sugar, the energy storage substance is fat, the structural substance is protein, and the genetic material is DNA, so Hu Mengfeng A is glucose, E is glycogen in animal cells, mainly in liver cells and muscle cells, and E refers to starch in plant cells. F is fat, which is involved in lipid transport in the blood but sterols, D is the deoxynucleoside Zhizaic acid, H is the deoxyribonucleic acid, and the last question is C H O

Biology is similar to chemistry.

The white-breasted bitter bird (amaurornis phoenicurus) belongs to the family Craneicuridae, with a total of 4 subspecies. The base of the mouth is slightly raised, but the frontal carapace is not formed, and the peak of the mouth is shorter than the phalanges; tarsus shorter than middle toe (claw); The wings are short and round, and they are not good at flying long distances. He is a good runner, sneaking among reeds or aquatic plants, a slight swimmer, occasionally flying short distances, and feeding on insects, small aquatic animals and plant seeds.

During the breeding period, the male bird chirps violently in the morning and dusk, and the sound is like "kue, kue, kue", so it is called "Gu evil bird" or "bitter evil bird". In thorns or dense grasses, they can occasionally be used on trees to form simple disc-shaped nests with twigs, aquatic plants and bamboo leaves.

White-breasted bitter bitter medium-sized wading bird. The upper body is dark slate gray, and the cheeks, throat, chest, and abdomen are white, forming a black and white contrast with the upper body. The lower belly and tail are covered with chestnut red.

The second prize of the National Biology Competition floated by...

Blood circulation in the human body refers to the circulation of blood in a closed system composed of heart and blood vessels, which can be divided into systemic circulation and pulmonary circulation The systemic circulation starts from the left ventricle and passes through the aorta, the systemic artery, the whole body capillaries, the systemic veins, the superior and inferior vena cava to the right atrium; Oxygen-rich arterial blood enters the left atrium from the pulmonary vein, pumps from the left ventricle into the aorta, and then from the left ventricle to the aorta, and then to other branch arteries throughout the body. The pulmonary veins are the only veins that carry arterial blood.

The oxygen carried by a red blood cell in the extraalveolar capillary needs to pass through the alveolar capillaries, pulmonary veins, left atrium, left ventricle, aorta, upper limb artery, and upper limb capillaries to reach the upper limb muscle cells

So the answer is: h a c f i (e).

Blood circulation in the human body refers to the circulation of blood in a closed system composed of heart and blood vessels, which can be divided into systemic circulation and pulmonary circulation The systemic circulation starts from the left ventricle and passes through the aorta, the systemic artery, the whole body capillaries, the systemic veins, the superior and inferior vena cava to the right atrium; Pulmonary circulation begins in the right ventricle and passes through the pulmonary arteries, pulmonary capillaries, and pulmonary veins to the left atrium

The oxygen carried by a red blood cell in the extraalveolar capillary needs to pass through the alveolar capillaries, pulmonary veins, left atrium, left ventricle, aorta, upper limb artery, and upper limb capillaries to reach the upper limb muscle cells

So the answer is: h a c f i (e).

h a c f i

Sure, oh! Oxygen-rich arterial blood travels from the pulmonary veins into the left atrium, from the left ventricle to the aorta, and to other branch arteries throughout the body. The pulmonary veins are the only veins that carry arterial blood.

1 A is obviously true B: It has nothing to do with photosynthesis C: One is active absorption One is free diffusion D: Of course this is true.

2 c Maintain the top advantage?

3 The main thing is to keep warm.

4 "Pure" forests are more unstable (fewer species) and farmland is maintained.5 The more species of organisms, the better the stability (in fact, this question is not rigorous, so there is no need to investigate too much).

(1) Item A is obviously wrong because the transpiration of plants at night is greater than during the day.

The way in which root hair cells absorb water and absorb inorganic salts is free diffusion.

Subparagraph d is unclear. 2) Select item C. Only by removing part of the side branches in time can auxin be concentrated in the main trunk, and the concentration of auxin in the main stem terminal bud is relatively high and cannot be removed.

3) Select item C. Sufficient water is not the key point to be emphasized in this sentence, and mulching with mulching is to use the heat of the earth to promote early germination of seeds.

4) Select item C. Pure Masson pine forests are woodlands where this species is the only one. The crops in the farmland are all crops, and evolutionarily speaking, they are inferior to the other three (all trees), and they are not so resistant. Therefore, it will be more likely to break out of insect infestations.

5) It is definitely an option, and the reduction of biological species will weaken the antagonism of species in this ecosystem, which is not conducive to the development and self-regulation of the ecosystem. Only by increasing the variety of organisms can the tolerance of this ecosystem be expanded and its self-regulating capacity enhanced. In general, the introduction of invasive species will not be considered for such a topic.

The other two items b and d do not do much for the ecosystem, because they are talking about self-regulating capacity.

(1) b, because the absorption of inorganic salts requires energy, and the energy comes from the oxidation and decomposition of organic matter, and organic matter is produced by photosynthesis, such a complex relationship, of course, can not be called a direct impact.

aThe water absorption of plant roots is based on transpiration to produce transpiration pull, which is a direct impact.

cWater is absorbed by transpiration pull, and energy is required to absorb inorganic salts.

dNeedless to say, this one.

2) D, the protection of the main stem apical bud is to maintain the apical dominance, and the mistake of C is because the apical dominance is that the apical bud occupies the initiative, and whether or not to pick the side branches has little to do with the protection of the apical dominance.

3) c, the mulch film can maintain the temperature, which is conducive to seed germination. Stay hydrated... Early spring emphasizes cold rather than dryness, so you should follow the topic.

4) b, from the name "pine" caterpillar, it can be seen that pine caterpillars do not eat crops, so farmland can be completely excluded, while the pure forest of masson pine due to the small number of plant species, so pine caterpillars can spread at a very fast speed. Just like the flu invasion, is it faster for half of the people who have antibodies and half of the people who don't have antibodies, or do the people who don't have antibodies get infected faster? Of course, there are no antibodies.

5) c, increasing self-regulation ability and avoiding biological invasion is not a concept at all, even tropical rainforests with the largest variety of flora and fauna cannot avoid the possibility of biological invasions. Increased self-regulation refers to the ability of ecosystems to adapt to new situations and the rate at which they can adjust after the addition or decrease of one or more species.

In horticulture, flowers are often manipulated as shown in the figure. Judging from the figure, one of the errors is () Please because bacteria (which belong to prokaryotes) also have chromosomes, so chromatin is not only present in the nucleus.

1. c The amount of water absorbed by plant roots is affected by transpiration, but not directly, due to transpiration pull; The amount of inorganic salts absorbed by plant roots directly affected the concentration of inorganic salts in soil and roots. The structure of root hair cells is both conducive to water absorption.

2、c3、c

4, d5, c does not mean that increasing the number of biological species will lead to biological invasion, because the self-regulation ability of the ecosystem is related to the trophic structure and level of the ecosystem, and these two are also related to species.

ATP can be hydrolyzed into one tam nucleotide and two phosphoric acids, the nucleotide here refers to: nucleoside monophosphate (AMP), i.e., ATP amp + 2Pi;

ATP A stands for: Adenosine, i.e., adenine nucleoside, which is made up of adenine bases and ribose. ATP full name:

Adenine nucleoside triphosphate (adenosine-triphosphate), A—P P P, where A refers to adenine nucleoside, T stands for three, P generation virtual epiphosphate group. State letter burning.

The compound contains 1 free amino group and 1 carboxyl group in it.

There are 3 kinds of amino acids that make up this compound, and the compound is called pentapeptide compound, and the structural formula of its peptide bond is —c—n-

o H The reaction in which this compound is formed is called dehydration condensation. 4 water molecules are lost during formation. The relative molecular mass decreased by 72

The compound has 7 oxygen atoms, 4 of which are located on the peptide bond and 3 on the R group.

This seems to be high school chemistry, hey, I haven't studied it for a long time, and I forgot about it.

41. The bottom of the atmosphere, most of the hydrosphere, and the surface of the lithosphere.

Inorganic, organic.

cambium 42, grass; rats, rabbits; The non-living parts, such as sunlight, temperature, aquatic plants - rats - snakes - eagles, the arrows are on the right.

The eagle is relatively stable, self-adjusting, rat, ecologically balanced.

— cell wall. 2 - Cell membrane.

Armor; 4 - nucleus; Chromosomes, DNA, proteins.

7 – Mitochondria.

5 – Vacuoles.

41 (1) Bottom of the atmosphere, all of the hydrosphere, top of the lithosphere (2) Inorganic matter Organic matter (3) Cellulose 42 (1) Grass Rabbit and rat Inorganic environment (2) Grass "Rat" "Snake" Eagle (3) Eagle (4) Balance Repair Rats and rabbits Ecological balance 43 (1) 1 Cell wall (2) 2 Cell membrane (3) A 4 Nucleus Nucleic acid DNA RNA (4) 6 Cytoplasm 5 Cell fluid.