SENIOR ELEMENTARY TEACHER SET PAST PAPERS AND SYLLABUS
چار آپشن میں سے کسی ایک پر کلک کرنے سے جواب سرخ ہو جائے گا۔
اگر کسی نسل کے فینوٹائپس میں مساوی غالب اور متواتر حیاتیات ہیں (1:1 تناسب)، تو یہ کیا نمائندگی کرتا ہے؟
- Law of dominance
- Law of independent assortment
- Law of segregation
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Gregor Mendel proposed laws of inheritance based on pea plant experiments.
- A 1:1 phenotypic ratio is typical of a test cross (heterozygous × homozygous recessive).
- This occurs due to the separation (segregation) of alleles during gamete formation.
- Each gamete receives only one allele from a gene pair.
- Hence, equal chances of dominant and recessive offspring appear.
Last verified on 21-05-2026
- 1:1:1:1
- 9:3:3:1
- 3:1
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- A test cross means crossing a heterozygous organism with a double recessive one (AaBb × aabb).
- If genes assort independently, four types of offspring appear equally.
- Therefore, the phenotypic ratio is 1:1:1:1.
Last verified on 21-05-2026
- Tt
- TT
- TTT
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Gregor Mendel performed monohybrid crosses on pea plants.
- In this cross, pure tall plant (TT) is crossed with pure dwarf plant (tt).
- Each parent contributes one allele to the offspring.
- All F1 offspring receive genotype Tt.
- Since tallness (T) is dominant, all F1 plants appear tall.
Last verified on 21-05-2026
دو طلبہ لیب کے دوران مذاق کر رہے ہیں۔ استاد انہیں کم توجہ دے کر سرگرمی میں شامل کرنا چاہتا ہے۔ استاد کو کون سا طریقہ استعمال کرنا چاہیے؟
- Corporal punishment
- Planned ignoring with redirection
- Suspension from class
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Planned ignoring means giving less attention to minor inappropriate behavior.
- Redirection means guiding students back toward the correct activity.
- This approach avoids unnecessary punishment and keeps students engaged.
- It is effective for small classroom disruptions like joking or talking.
- The goal is to maintain discipline positively and continue learning.
Last verified on 21-05-2026
دو طلبہ آپس میں لڑ رہے ہیں۔ استاد کے لیے بحالی نقطہ نظر کیا ہوگی؟
- Help students understand harm caused and repair relationships
- Suspend both students immediately
- Give corporal punishment
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Restorative approach focuses on behavior correction through understanding and responsibility.
- Students are guided to realize the harm caused by their actions.
- The aim is to repair relationships, not to punish harshly.
- It encourages communication, reflection, and mutual agreement.
- It builds a positive and peaceful classroom environment.
Last verified on 21-05-2026
لیمارک کا نظریہ درج ذیل میں سے کس چیز کی حمایت نہیں کرتا؟
- Adaptation through environmental influence
- Use and disuse of organs
- Inheritance of acquired characters
- Evolution by genetic variation arising before environmental need
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Jean-Baptiste Lamarck proposed one of the earliest theories of evolution.
- Lamarck’s theory explains evolution through use and disuse of organs.
- It also supports inheritance of acquired characteristics (traits gained during life are passed to offspring).
- He believed organisms adapt directly due to environmental changes.
- His theory does not include modern genetic concepts.
Last verified on 21-05-2026
جدید مصنوعی نظریہ ارتقاء، ڈارون کے اصل نظریے سے بنیادی طور پر کس چیز کی شمولیت کی وجہ سے مختلف ہے؟
- Fossil evidence and embryology
- Genetics and population thinking
- Natural selection only
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Modern Synthetic Theory (Neo-Darwinism) is an updated form of Darwin’s theory.
- It combines natural selection with genetics to explain evolution.
- It introduces population genetics instead of focusing only on individuals.
- It explains how gene frequencies change in populations over time.
- It provides a scientific basis for heredity and variation.
Last verified on 21-05-2026
- While
- When
- But
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- “Scarcely…when” is a fixed pair used for quick succession of events.
- It shows one action immediately follows another.
- Correct structure: Scarcely had it stopped raining when the sun came out.
Last verified on 21-05-2026
- When
- While
- But
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- “Hardly…when” is a fixed correlative structure used in past tense.
- It shows one action happened immediately after another.
- Correct form: Hardly had I reached the station when the train left.
Last verified on 21-05-2026
- He said who drafted that policy.
- He asked who had drafted that policy.
- He said who was drafting this policy.
- None of these
اس سوال کو وضاحت کے ساتھ پڑھیں
Explanation
- Interrogative sentence changes to indirect form → “said” becomes “asked”
- Tense shifts back: drafted → had drafted (backshift)
- “This” changes to “that” in indirect speech.
Last verified on 21-05-2026
