MCQs on Reptiles

Q. What term refers to reptiles that give birth to live young? 

   a) Oviparous 

   b) Ovoviviparous 

   c) Viviparous 

   d) Biparous 

Ans: c) Viviparous

Q. Which of the following reptiles exhibits ovoviviparity, where eggs hatch inside the mother’s body? 

   a) Garter Snake 

   b) Green Iguana 

   c) Nile Crocodile 

   d) Komodo Dragon 

Ans: a) Garter Snake

Q. Reptiles generally exhibit which type of fertilization? 

   a) External 

   b) Internal 

   c) Both internal and external 

   d) Asexual 

Ans: b) Internal

Q. In reptiles, the term “clutch” refers to: 

   a) A group of reptiles 

   b) The number of eggs laid at one time 

   c) The act of mating 

   d) The period of incubation 

Ans: b) The number of eggs laid at one time

Q. Which organ is used by male reptiles to transfer sperm to the female during reproduction? 

   a) Cloaca 

   b) Hemipenis 

   c) Spermatophore 

   d) Vivipore 

Ans: b) Hemipenis

Q. Which environmental factor often determines the sex of reptile offspring? 

   a) Rainfall 

   b) Temperature 

   c) Humidity 

   d) Daylight 

Ans: b) Temperature

Q. Which type of reproduction involves females giving birth without fertilization by a male? 

   a) Hermaphroditism 

   b) Parthenogenesis 

   c) Viviparity 

   d) Binary fission 

Ans: b) Parthenogenesis

Q. Parthenogenesis is observed in which of the following reptiles? 

   a) Komodo Dragon 

   b) King Cobra 

   c) Saltwater Crocodile 

   d) Green Sea Turtle 

Ans: a) Komodo Dragon

Q. Which reptile lays the largest eggs in the animal kingdom? 

   a) Saltwater Crocodile 

   b) Galápagos Tortoise 

   c) Komodo Dragon 

   d) Leatherback Sea Turtle 

Ans: d) Leatherback Sea Turtle

Q. Most reptiles lay their eggs in: 

   a) Water 

   b) Burrows or underground nests 

   c) Trees 

   d) Rocks 

Ans: b) Burrows or underground nests

Q. Reptiles that bury their eggs in the sand for incubation include: 

   a) Pythons 

   b) Tortoises 

   c) Alligators 

   d) Sea Turtles 

Ans: d) Sea Turtles

Q. Which of the following statements is true about reptile eggs? 

   a) They have hard shells like bird eggs 

   b) They are mostly soft and leathery 

   c) They hatch immediately after being laid 

   d) They develop in water 

Ans: b) They are mostly soft and leathery

Q. How do female crocodiles ensure the survival of their offspring? 

   a) They leave the eggs after laying them 

   b) They guard and sometimes assist the hatchlings 

   c) They carry the eggs inside their body 

   d) They hide the eggs in water 

Ans: b) They guard and sometimes assist the hatchlings

Q. What is the primary reason reptiles lay eggs in secluded places? 

   a) To regulate temperature 

   b) To protect from predators 

   c) To ensure water availability 

   d) To avoid dehydration 

Ans: b) To protect from predators

Q. The incubation period for reptile eggs depends primarily on which factor? 

   a) Egg size 

   b) Humidity 

   c) Temperature 

   d) Sunlight exposure 

Ans: c) Temperature

Q. Which of these reptiles is known for laying eggs and then abandoning them? 

   a) Snakes 

   b) Crocodiles 

   c) Sea Turtles 

   d) Pythons 

Ans: c) Sea Turtles

Q. What special adaptation do reptile embryos have for breathing inside the egg? 

   a) Gills 

   b) Lungs 

   c) Yolk sac 

   d) Allantois 

Ans: d) Allantois

Q. In reptiles, egg incubation in a nest can lead to temperature-dependent sex determination (TSD). Which species commonly exhibits TSD? 

   a) Geckos 

   b) Crocodiles 

   c) Anacondas 

   d) Lizards 

Ans: b) Crocodiles

Q. Which of the following reptiles gives birth to live young instead of laying eggs? 

   a) Pythons 

   b) Garter Snakes 

   c) Sea Turtles 

   d) Iguanas 

Ans: b) Garter Snakes

Q. What is the primary advantage of viviparity in reptiles? 

   a) Faster growth of the young 

   b) Better protection for the embryos 

   c) Higher clutch size 

   d) Lower energy expenditure 

Ans: b) Better protection for the embryos

Q. Ovoviviparous reptiles: 

   a) Lay eggs in water 

   b) Lay eggs that hatch immediately 

   c) Retain eggs in the body until they hatch 

   d) Produce only one offspring 

Ans: c) Retain eggs in the body until they hatch

Q. Which snake species is known for ovoviviparous reproduction? 

   a) King Cobra 

   b) Garter Snake 

   c) Python 

   d) Anaconda 

Ans: d) Anaconda

Q. Viviparity in reptiles is often associated with which environmental condition? 

   a) Tropical rainforests 

   b) Cold or temperate climates 

   c) Arid deserts 

   d) Coastal regions 

Ans: b) Cold or temperate climates

Q. Which of these lizards is known for live birth (viviparity)? 

   a) Green Iguana 

   b) Skinks 

   c) Bearded Dragon 

   d) Chameleon 

Ans: b) Skinks

Q. In ovoviviparous reproduction, what role does the egg yolk play? 

   a) It protects the embryo from dehydration 

   b) It provides nourishment to the developing embryo 

   c) It helps in gas exchange 

   d) It provides warmth to the embryo 

Ans: b) It provides nourishment to the developing embryo

Q. Viviparity is most likely to evolve in reptiles living in: 

   a) Hot deserts 

   b) Cool, temperate regions 

   c) Tropical rainforests 

   d) Open grasslands 

Ans: b) Cool, temperate regions

Q. Which of these factors is thought to drive the evolution of viviparity in reptiles? 

   a) Predation pressure 

   b) Environmental temperature 

   c) Food availability 

   d) Nest-building capabilities 

Ans: b) Environmental temperature

Q. In reptiles, live birth is more common in: 

   a) Lizards and snakes 

   b) Turtles and tortoises 

   c) Crocodiles and alligators 

   d) All species of reptiles 

Ans: a) Lizards and snakes

Q. What is the term for the male reptile’s courtship behavior to attract a female? 

   a) Display 

   b) Mating dance 

   c) Hissing 

   d) Copulation 

Ans: a) Display

Q. Which of the following reptiles is known to provide significant parental care to its offspring? 

   a) Sea Turtles 

   b) Pythons 

   c) Crocodiles 

   d) Lizards 

Ans: c) Crocodiles

Q. In reptiles, parental care is most common in: 

   a) Snakes 

   b) Turtles 

   c) Crocodiles 

   d) Lizards 

Ans: c) Crocodiles

Q. Which of these reptiles exhibits brooding behavior by coiling around their eggs to incubate them? 

   a) Sea Turtle 

   b) Python 

   c) Alligator 

   d) Igu

ana 

Ans: b) Python

Q. Reptile offspring that are independent immediately after hatching are referred to as: 

   a) Precocial 

   b) Altricial 

   c) Immature 

   d) Semi-precocial 

Ans: a) Precocial

Q. Which of these reptiles is known for protecting its nest and helping its young hatch? 

   a) Komodo Dragon 

   b) Saltwater Crocodile 

   c) Gila Monster 

   d) Gecko 

Ans: b) Saltwater Crocodile

Q. What is unique about some reptiles like the Python during egg incubation? 

   a) They provide heat to the eggs by muscular shivering 

   b) They expose the eggs to sunlight 

   c) They eat some of the eggs 

   d) They continuously roll the eggs 

Ans: a) They provide heat to the eggs by muscular shivering

Q. Which of the following reptiles has been observed to care for its offspring even after they hatch? 

   a) Sea Turtle 

   b) Nile Crocodile 

   c) Monitor Lizard 

   d) Rattlesnake 

Ans: b) Nile Crocodile

Q. How do male lizards typically attract females during the breeding season? 

   a) Vocal calls 

   b) Display of bright colors 

   c) Tail shaking 

   d) Laying scent trails 

Ans: b) Display of bright colors

Q. Which of the following snakes is known to incubate its eggs by coiling around them? 

   a) King Cobra 

   b) Rattlesnake 

   c) Python 

   d) Coral Snake 

Ans: c) Python

Q. The reproductive cycle in most reptiles is controlled by: 

   a) Photoperiod and temperature 

   b) Rainfall 

   c) Food availability 

   d) Humidity 

Ans: a) Photoperiod and temperature

Q. Which reptile has a unique mating ritual that involves biting and holding onto the female during copulation? 

   a) Gila Monster 

   b) Komodo Dragon 

   c) Crocodile 

   d) Tortoise 

Ans: b) Komodo Dragon

Q. In reptiles, copulation usually occurs through which opening? 

   a) Vent 

   b) Cloaca 

   c) Genital pore 

   d) Ovipore 

Ans: b) Cloaca

Q. Which of the following reptiles can store sperm and delay fertilization for months or even years? 

   a) Garter Snakes 

   b) Crocodiles 

   c) Sea Turtles 

   d) Monitor Lizards 

Ans: a) Garter Snakes

Q. Which is the primary mating strategy in reptiles? 

   a) Monogamy 

   b) Polygyny 

   c) Polyandry 

   d) Asexual reproduction 

Ans: b) Polygyny

Q. Which environmental cue often signals the start of the breeding season for reptiles? 

   a) Increasing temperature 

   b) Decreasing daylight hours 

   c) Increased food availability 

   d) Decreasing rainfall 

Ans: a) Increasing temperature

Q. What is the term for the period during which reptiles prepare to mate and reproduce? 

   a) Breeding season 

   b) Incubation period 

   c) Mating cycle 

   d) Gestation period 

Ans: a) Breeding season

Q. Reptiles that exhibit temperature-dependent sex determination include: 

   a) Tortoises 

   b) Crocodiles 

   c) Snakes 

   d) Iguanas 

Ans: b) Crocodiles

Q. Which of the following is a common mating behavior among reptiles? 

   a) Vocalizations 

   b) Color changes 

   c) Tail vibrations 

   d) All of the above 

Ans: d) All of the above

Q. Reptiles typically reach sexual maturity based on: 

   a) Age and size 

   b) Egg production 

   c) Hatching speed 

   d) Nesting behavior 

Ans: a) Age and size