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Drag each term or phrase to the appropriate category. If the term or phrase describes both primary and secondary growth, drag it to the "both" bin. If the term or phrase describes neither primary nor secondary growth, drag it to the "neither" category.

terms: -vascular cambium, -elongation, -increases exposure to light, -increases vascular flow, -occurs in plants that live only one year, -occurs in plants that live many years, -cork cambium, -provides structural support, -apical meristem, -lateral meristem, -growth in thickness

categories
Primary growth:
secondary growth:
both:
neither:

User Rutsky
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4.5k points

2 Answers

2 votes

Final answer:

Primary growth is characterized by elongation and occurs via the apical meristem, while secondary growth increases plant thickness through the lateral meristems like the vascular cambium and cork cambium.

Step-by-step explanation:

The process of growth in plants includes both primary and secondary growth. Primary growth is responsible for the elongation of the plant and occurs through the activity of the apical meristem, which adds length or height. Secondary growth, on the other hand, increases the girth or thickness of the plant and is facilitated by lateral meristems like the vascular cambium and cork cambium. Now we'll categorize the given terms under appropriate headings:

  • Primary growth: -elongation, -apical meristem, -increases exposure to light, -occurs in plants that live only one year, -provides structural support (primary growth provides initial structural support before secondary growth)
  • Secondary growth: -vascular cambium, -growth in thickness, -cork cambium, -increases vascular flow, -occurs in plants that live many years
  • Both: -provides structural support (since both types of growth contribute to the structural integrity of the plant)
  • Neither: There are no terms provided that do not relate to either primary or secondary growth.
User Karan Kalsi
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5.2k points
4 votes

Answer:

Primary growth: elongation, apical meristem, lateral meristem, increases exposure to light.

Secondary growth: vascular cambium, cork cambium, increases exposure to light.

Both: growth in thickness, provides structural support.

Neither: occurs in plants that live only one year, occurs in plants that live many years.

Step-by-step explanation:

Every plant presents primary growth, while only woody dicots and gymnosperms present secondary growth. It does not depend on being annual or perennial. In primary growth cells get elongated and the plant grows in length due to the activity of the apical meristems and, grows in thickness, due to the activity of the lateral meristem. In secondary growth, there is no apical growth and the vascular cambium and the cork cambium are the ones in charge of thickness growth. The vascular cambium is located between primary xylem and phloem and is responsible for secondary xylem and phloem production. Vascular tissues are involved in the flow of nutrients and water, which is improved by the secondary growth, increasing the vascular flow. Vascular tissue is also involved in shoot resistance. This last characteristic might be considered as structural support. The cork cambium produces cork to the exterior and felodermis to the interior. Exposure to light is related to primary growth, this is why plants that compete for light or that lives in hidden places keep growing in high.

User Yonas
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5.2k points