A population of organisms sharing identical genetic stock yet exhibiting morphological variations is termed:
Show answer Hide answer
Answer: B. Ecad
Explanation
An ecad is a population of organisms with identical genetics exhibiting phenotypic variations. Environmental differences across habitats cause morphological changes despite identical genotypes. Phenotypic plasticity allows these populations to adapt physically to distinct local conditions. Genetics determine the hereditary makeup of organisms within stable biological populations. Morphological traits can vary widely in response to climate, soil, or moisture gradients. Ecological terminology distinguishes between genetic adaptations and plastic phenotypic responses.
Botanists study ecads to understand how plants adapt morphologically to diverse environments. Ecological research requires separating genetic variations from environmentally induced physical traits. Habitat fragmentation forces populations to exhibit diverse phenotypic responses across regions. Ecotypes possess distinct genetic variations resulting from evolutionary selection pressures. Ecotones represent transitional zones between two different ecological communities or biomes. Life form classifications describe the general structural adaptation of plants to climate.
- Subject
- Agriculture
- Category
- Forestry
- Topic
- —
- Difficulty
- medium
Related questions
Q1. A productive, fertile soil typically exhibits a pH level of:
Show answer Hide answer
Answer: C. 6-7
Most agricultural crops and fertile soils thrive best in a slightly acidic to neutral pH range of six to seven. A pH level between six and seven ensures optimal nutrient availability and microbial activity for healthy pl...
Q2. An influx of domestic sewage laden with organic waste into a lake can lead to:
Show answer Hide answer
Answer: D. Death of fish due to lack of oxygen
Excess organic sewage introduces nutrients that trigger rapid algal blooms and severe aquatic oxygen depletion. When algae eventually die and decompose, aerobic bacteria consume dissolved oxygen in the water column rapid...
Q3. A passive environmental factor influencing soil development is:
Show answer Hide answer
Answer: A. Nature of parent material
Parent material is considered a passive soil-forming factor providing the base mineral substrate upon which active factors act. Unlike climate and organisms that actively drive soil development, parent material provides...
Q4. Man is a part of the biotic community:
Show answer Hide answer
Answer: A. Always
Humans are permanently integrated as an active component of the global biotic community across all geographic regions. Human activities directly influence ecological balances, nutrient cycles, and biodiversity patterns w...
Q5. A barren, rocky terrain evolving into a lush forest follows a developmental sequence known as:
Show answer Hide answer
Answer: A. Lichen, mos, herbs, shrubs
Primary ecological succession begins on bare rock with pioneer species like lichens and mosses. As organic matter accumulates from decomposing pioneers, small herbs and hardy shrubs successfully colonize. This predictabl...
Q6. A decorative flower garden constitutes:
Show answer Hide answer
Answer: C. Both (a) & (b)
Decorative gardens fulfill both aesthetic desires and practical cultivation goals around residential dwellings. Cultivating ornamental flowers and plants enhances visual architectural beauty while offering rewarding ther...