Вопрос:

The image shows a plant and its parts. Identify the plant and describe its key botanical features, focusing on its reproductive structures. Additionally, analyze the provided diagrams of its reproductive components.

Смотреть решения всех заданий с листа

Ответ:

Analysis of Botanical Illustration

The illustration depicts a mature corn plant (Zea mays) along with detailed views of its reproductive structures.

Corn Plant Anatomy:

  • Overall Plant: The main image on the left shows a stalk with broad leaves, a fibrous root system, and the characteristic tassel at the apex.
  • Tassel: The upper right image displays a close-up of the tassel, which is the male inflorescence of the corn plant. It consists of numerous spikelets, each containing male flowers that produce pollen.
  • Kernel: The image directly above the diagrams shows a single corn kernel (caryopsis), which is the fruit of the corn plant. It consists of the pericarp fused with the seed coat, enclosing the endosperm and embryo.
  • Reproductive Structures (Diagrams): The two diagrams at the bottom appear to represent cross-sections or stylized views of reproductive parts. The left diagram shows multiple small, circular structures within a shield-like outline, possibly representing ovules or developing kernels in a female inflorescence (ear). The right diagram presents a more complex structure with a central circular element surrounded by smaller parts, potentially indicating the arrangement of silks and ovules within a developing ear or a cross-section of a mature kernel showing the embryo and endosperm in more detail.

Botanical Description:

  • Plant Type: Corn is a monocotyledonous annual grass.
  • Inflorescence: It is monoecious, meaning it has separate male and female flowers on the same plant. The male flowers are borne in the terminal tassel, and the female flowers are borne in the axils of the leaves in ears, typically developing lower on the stalk.
  • Pollination: Pollination is anemophilous (wind-pollinated), with pollen from the tassel reaching the silks (stigmas) of the ear.
  • Fruit: The mature kernel is botanically a caryopsis.

Conclusion: The illustration effectively demonstrates the overall morphology of a corn plant and highlights its key reproductive organs: the tassel (male) and the structures related to the ear and kernel (female/fruit).

ГДЗ по фото 📸
Подать жалобу Правообладателю