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Whether the leaves of Ranunculus mandshurica changed after reaching the land

Correct answer: B. Environmental differences. The same buttercup, the leaves exposed in the air and the leaves immersed in water, because the two kinds of leaves come from the same fertilized egg, so the genotypes in the two kinds of leaf cells are the same, but because the environment is different, so the two kinds of leaves show two different forms, so choose B.

Because there is much less oxygen in the water than on the surface, in order to get more oxygen, the buttercup mutates the leaves in the water into ribbons, which increases the area of the leaves to absorb oxygen, so that the leaves growing underwater can also carry out normal photosynthesis.

Phenotypes (such as buttercup leaves) are the result of the interaction of genotypes and environmental conditions.

Reasons for the formation of leaves of Ranunculus mandshurica

The main results are as follows: 1. Buttercup belongs to variation in different environments. The leaves of the same organism can also vary due to different water environments. For example, buttercups have two different leaves on the same plant, which are flaky on the surface of the water and mitotic into bands under water. Different characteristics of water environment induce the formation of different forms of leaves.

2. The answer is: the genotype of D buttercup determines its leaf shape, but different genetic information will be expressed in the process of gene expression due to the influence of environment. The phenotype of item D is the result of the interaction of genotype and environmental conditions, and it is the conclusion drawn by people through the phenomenon.

3. The underwater leaves of Ranunculus changed when they reached the land. The difference in leaf shape on the same buttercup is the result of the plant's long-term adaptation to two different environments above water and under water.

4. Why is there such a big difference in the appearance of leaves on the same plant? Plant morphologists tell us that the difference in leaf shape on the same buttercup is the result of the plant's long-term adaptation to both aquatic and underwater environments.

Buttercup is a kind of aquatic plant, its leaves grow in the water like silk, grow on the surface of the water in a flat shape, water.

The answer is: the genotype of D buttercup determines its leaf shape, but different genetic information will be expressed in the process of gene expression due to the influence of environment. The phenotype of item D is the result of the interaction of genotype and environmental conditions, and it is the conclusion drawn by people through the phenomenon.

Ranunculus is a kind of aquatic plant, its leaves grow in silk shape in water and flat on water surface. The variation of this character of buttercup leaves indicates that phenotype is the result of genotype and environmental conditions. The characteristics of Ranunculus, belonging to angiosperms, Ranunculaceae, Ranunculus.

For example, for the same buttercup, the leaves are silky in the water and flaky on the surface of the water. One individual, one genotype, is influenced by the environment to express into two different types of leaves.

Buttercup-exposed leaves in the air and leaves immersed in water, show two different forms. The former is flat and wide, while the latter is deeply split and silky.

Morphological characteristics of Ranunculus

Ranunculus is a kind of aquatic plant, its leaves grow in silk shape in water and flat on water surface. The variation of this character of buttercup leaves indicates that phenotype is the result of genotype and environmental conditions. The characteristics of Ranunculus, belonging to angiosperms, Ranunculaceae, Ranunculus.

Leaf blade with short or long stalks; outline subsemiorbicular or fanlike semiorbicular, lobules subfiliform, usually folded or nearly diverged outside water, glabrous or subglabrous. Petiole base has broad or narrowly sheathed, usually more or less short hairs, occasionally only sheathlike parts of petiole.

Key features: herbs, leaves divided or compound leaves. Flowers bisexual, neat, 5-cardinal; calyx and petals free; stamens and pistils numerous, free, spirally arranged on inflated receptacle. Achene aggregates. Morphological features: perennial or annual herbs, few shrubs or woody vines.

Pulsatilla gracilis: Ranunculaceae, Pulsatilla, perennial herbs, tall. Basal leaves 4-5, growing above ground when flowering. I like cool and dry climate. Cold-resistant, drought-resistant, not heat-resistant. The sandy loam with deep soil layer and good drainage grows best, followed by alluvial soil and clay loam, while the low-lying land with poor drainage is not suitable for planting.

What kind of flowers are growing in the water?

The main results are as follows: 1. Shuilu is a perennial submerged monocotyledonous plant with submerged or floating leaves. The scape is about 21 cm long, the spike is single, and the flowers are yellow terminal, protruding to the surface at flowering stage. The florescence is from April to October. Born in shallow ponds, ditches and water storage paddy fields. Third, Typha latifolia is a perennial aquatic or marsh herb.

2. The flowers in the water are lotus, water lilies, water hyacinth, sea cauliflower, calamus, Pingpeng grass, Euryale, lettuce, locust leaf duckweed, water turtle, water poppy and so on. Lotus is a perennial aquatic herbaceous flower. The underground stem is long and thick, with long nodes and round leaves.

3. Narcissus tazetta L. Var. Chinensis Roem. ): also known as Chinese daffodils, is a variety of multi-flowered daffodils. It is a perennial herb of Amaryllidaceae. The leaves of daffodils are extracted from the green-white tubular sheath at the top of the bulb (commonly known as arrow) and then extracted from the leaves.

Does buttercup belong to variation in different environments?

The main results are as follows: 1. "the same buttercup" shows that the genetic material is the same, and the leaves living in water are very different from those exposed in the air. It is said that their variation is caused by different living environments and is non-heritable. Option C conforms to the meaning of the question.

2. The answer is: the genotype of D buttercup determines its leaf shape, but different genetic information will be expressed in the process of gene expression due to the influence of environment. The phenotype of item D is the result of the interaction of genotype and environmental conditions, and it is the conclusion drawn by people through the phenomenon.

3. Chromosome variation. Correct answer: B. Environmental differences. The same buttercup, the leaves exposed in the air and the leaves immersed in water, because the two kinds of leaves come from the same fertilized egg, so the genotypes in the two kinds of leaf cells are the same, but because the environment is different, so the two kinds of leaves show two different forms, so choose B.

4. The underwater leaves of Ranunculus changed when they reached the land. The difference in leaf shape on the same buttercup is the result of the plant's long-term adaptation to two different environments above water and under water.

5. Plant morphologists tell us that the difference in leaf shape on the same buttercup is the result of the plant's long-term adaptation to two different environments above water and under water.