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Consider the following statements and se...

Consider the following statements and select the correct option that fills in the blanks.
I. A .......food chain being with dead organic matter .
II. In xerach succession the series progress from ........ conditions .
III Breking down of detritus into small particles by earthworm is called .........

A

`{:(I,II,III),("Grazing","Xeric to mesic","Catabolism"):}`

B

`{:(I,II,III),("Detritus","Xeric to mesic","Fragmentation"):}`

C

`{:(I,II,III),("Detritus","Mesic to xeric ","Mineralization"):}`

D

`{:(I,II,III),("Parasitic","Mesic to xeric ","Humification"):}`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to fill in the blanks in the given statements based on our understanding of ecological concepts. Let's break it down step by step. ### Step-by-Step Solution: 1. **First Statement:** - The statement is: "A ______ food chain begins with dead organic matter." - We know that there are two types of food chains: grazing food chains and detritus food chains. Grazing food chains start with producers (like plants), while detritus food chains start with dead organic matter. - Therefore, the correct term to fill in the blank is **"detritus."** - Completed statement: "A **detritus** food chain begins with dead organic matter." 2. **Second Statement:** - The statement is: "In xerarch succession, the series progresses from ______ conditions." - Xerarch succession refers to ecological succession that occurs in dry areas. It typically starts from xeric (dry) conditions and progresses to more mesic (moist) conditions. - Thus, the correct term to fill in the blank is **"xeric."** - Completed statement: "In xerarch succession, the series progresses from **xeric** conditions." 3. **Third Statement:** - The statement is: "Breaking down of detritus into small particles by earthworms is called ______." - The process of breaking down detritus into smaller fragments is known as fragmentation. Earthworms play a crucial role in this process by consuming detritus and breaking it down into smaller pieces. - Therefore, the correct term to fill in the blank is **"fragmentation."** - Completed statement: "Breaking down of detritus into small particles by earthworms is called **fragmentation.**" ### Final Answers: - I. A **detritus** food chain begins with dead organic matter. - II. In xerarch succession, the series progresses from **xeric** conditions. - III. Breaking down of detritus into small particles by earthworms is called **fragmentation.** ### Correct Option: Based on the filled statements, the correct option is **Option 2.**
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