Practise 31 real Federal Board questions on Biodiversity from 2023 to 2026. See the answer and explanation as soon as you answer.
Biodiversity is one of the 15 main chapters in our Federal Board Matric Biology question bank (9th class), and about 8% of its real questions come from it. Tayyari Karo has 31 real questions on this chapter from 2023 to 2026; 11 are multiple choice and marked instantly, and the rest are short and long questions with a model answer. By difficulty: 23 medium, 8 easy.
Work through the questions below, then open the explanation for each one. Redo the ones you missed a few days later.
These are real past-paper questions. Think of your answer first, then open the explanation.
Fossils of the same organism found in different rock layers mainly show:
Answer: C. Gradual change over time
Fossils in successive rock layers show gradual changes in organisms over long periods, evidence of evolution.
A species is best defined as a group of organisms that:
Answer: B. Interbreed naturally
A species is defined by the ability of its members to interbreed naturally and produce fertile offspring.
If human and cats belong to same class, they must belong to same:
Answer: D. Phylum
Organisms in the same class necessarily share the broader taxon phylum above it, but not the narrower genus/family/order.
The evolutionary process by which new biological species arise is called:
Answer: D. Speciation
Speciation is the process by which new, distinct species evolve from existing populations.
The Kingdom that consists of mostly unicellular and eukaryotic organism is:
Answer: B. Protista
Protista contains mostly unicellular eukaryotic organisms such as Amoeba and Euglena.
All are related with malaria EXCEPT:
Answer: C. Aedes
Aedes mosquito transmits dengue, not malaria; Anopheles (vector), Plasmodium (pathogen) and Quinine (treatment) are all linked to malaria.
Enlist main points of Darwin's theory of evolution. Briefly explain the key principle on which the theory is based.
Main points: (1) organisms produce more offspring than can survive (overproduction); (2) individuals show variation in traits; (3) there is a struggle for existence for limited resources; (4) individuals with favourable variations are more likely to survive and reproduce (survival of the fittest); (5) favourable traits accumulate over generations, leading to evolution of new species.
Key principle: Natural selection — nature 'selects' individuals best suited to their environment to survive and pass on their advantageous traits to offspring, gradually changing the population over time.
Why are viruses considered to be at the borderline between living and non-living organisms?
Viruses show non-living characteristics outside a host: they can be crystallised, have no metabolism, and cannot reproduce on their own. But inside a living host cell they show living characteristics: they use the host's machinery to replicate, carry genetic material (DNA or RNA), and can mutate/evolve. Because they show properties of both living and non-living things depending on their environment, they are considered to lie at the borderline between the two.
| Session | Questions |
|---|---|
| 2026 Annual | 8 |
| 2025 1st Annual | 11 |
| 2025 2nd Annual | 4 |
| 2024 Annual | 4 |
| 2023 Annual | 4 |
31 real Federal Board (FBISE) Biology questions on Biodiversity from 2023 to 2026, for 9th class. Each one shows the session it came from.
No. We could not find an official FBISE marking scheme for these papers, so the answers and explanations are written by Tayyari Karo for practice. Check anything important with your teacher or textbook.
You can start free with no signup. A small set of papers per subject is free, and Premium unlocks the full question bank.
