Biology Digestion/Nutrition KMU 2024
PMDC Verified Question 1 of 48
Carnivorous plants have evolved mechanisms for trapping and digesting small animals. The product of this digestion is used to supplement the plant's supply of:
A
Carbohydrates
B
Lipids
C
Nitrites
D
Water
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Nitrites
Concept:

Carnivorous plants typically inhabit bogs and acidic soils that are severely deficient in biologically available nitrogen.

Formula:

N/A

Solution:

  • To survive in these poor soils, carnivorous plants trap insects and secrete enzymes to digest their proteins.
  • The digestion of animal proteins yields amino acids and various nitrogenous compounds (like nitrates and nitrites), which the plant absorbs to fulfill its nitrogen requirement for synthesizing its own proteins and nucleic acids.


Why other options are incorrect:

Carnivorous plants are still fully photosynthetic autotrophs; they manufacture their own carbohydrates and lipids using sunlight and \(CO_2\). They do not need to eat insects for energy or water.

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