Which among the following was the biggest land dinosaur?
- Brachiosaurus
- Triceratops
- Stegosaurus
- Tyrannosaurusrex
The Correct Option is D
Approach Solution - 1
Of the dinosaurs listed below, Tyrannosaurus rex was the largest terrestrial dinosaur. The biggest known fossil specimen of this species reaches approximately $42$ feet in length and is estimated to have weighed between $14$ and $15$ metric tons.
The Stegosaurus, a plant-eating dinosaur, typically measured from $23$ to $40$ feet long, with an average weight ranging from $5$ to $7$ metric tons.
Another herbivorous dinosaur, the Triceratops, had a body length varying between $26$ and $30$ feet, while its weight could range from $6$ to $12$ metric tons.
Approach Solution -2
Tyrannosaurus rex was the largest land-dwelling dinosaur. The largest known fossil of this species measures about \(42\) feet in length and is estimated to have weighed between \(14\) and \(15\) metric tons.
The herbivorous Stegosaurus typically ranged in length from \(23\) to \(40\) feet, with an average weight of \(5\) to \(7\) metric tons.
Another plant-eating dinosaur, the Triceratops, had a body length between \(26\) and \(30\) feet, and its weight ranged from \(6\) to \(12\) metric tons.
Top Questions on evolution
- How does the process of Natural Selection affect Hardy-Weinberg equilibrium? Explain with the help of graphs.
- (a) “The process of evolution of different species in a given geographical area starts from a point and literally radiates to other geographical areas.” Explain it with an example.
(b) Cite an example where more than one adaptive radiation has occurred in an isolated geographical area. Name the type of evolution your example depicts. - (a) "The process of evolution of different species in a given geographical area starts from a point and literally radiates to other geographical areas." Explain it with an example.
(b) Cite an example where more than one adaptive radiation has occurred in an isolated geographical area. Name the type of evolution your example depicts. - A few stages and their respective time period in the evolutionary history of human beings are mentioned in the flowchart given below:
- 15 mya — Primates walking like gorillas and chimpanzees existed.
- 3–4 mya — Man-like primates walked in Eastern Africa. Fossils of their bones were discovered.
- 2 mya — This ancestor lived in the East African grasslands and ate fruits.
- 1.5 mya — This hominid had a brain size of 900 cc and probably ate meat.
- [(a)] Name one primate about 15 mya.
- [(b)] Name one place where fossils of primates were discovered in Eastern Africa.
- [(c)] Name the ancestor that lived in the East African grasslands about 2 mya.
- [(d)] Name the hominid that was found around 1.5 mya.
The given graph shows the range of variation among population members, for a trait determined by multiple genes. If this population is subjected to disruptive selection for several generations, which of the following distributions is most likely to result?
Questions Asked in KCET exam
- If \( A = \{ x : x \text{ is an integer and } x^2 - 9 \geq 0 \} \), \[ B = \{ x : x \text{ is a natural number and } 2 \leq x \leq 5 \}, \quad C = \{ x : x \text{ is a prime number} \leq 4 \} \] Then \( (B - C) \cup A \) is:
- KCET - 2025
- Set Theory
- If the number of terms in the binomial expansion of \((2x + 3)^n\) is 22, then the value of \(n\) is:
- KCET - 2025
- Binomial theorem
- A particle is in uniform circular motion. The equation of its trajectory is given by \( x = 2t^2 - 3t + 5 \), where \( x \) and \( y \) are in meters. The speed of the particle is 2 m/s. When the particle attains the lowest \( y \)-coordinate, the acceleration of the particle is (in \( \text{m/s}^2 \)):
- KCET - 2025
- Friction
- If \( A \) is a square matrix of order \( 3 \times 3 \), \( \det A = 3 \), then the value of \( \det(3A^{-1}) \) is:
- KCET - 2025
- Matrices
- A potential at a point A is 3 V and that at another point B is 5 V. What is the work done in carrying a charge of 5 mC from B to A?
- KCET - 2025
- Electric Field
Concepts Used:
Evolution
Evolution is a process that occurs in changes in the genetic content of a population over time. Evolutionary change is generally classified into two: microevolution and macroevolution. The process of changes in allele frequencies in a population over time is a microevolutionary process. Three main mechanisms that cause allele frequency change are natural selection, genetic drift, and gene flow. On the other hand, macroevolution refers to change at or above the level of the species.