plzzz answer the attached questions
Answers
Answer:
7. gymnosperms are those plants who have naked seeds.
for example.. sycon
Answer: 1 b) tranverse
2 d) speed
3 a) spirogyra
4 d) whittaker
5 b) no. of electron changes
6 valence electrons are the electrons accomodated in the outermost or valence shell of an atom
7 Gymnosperms are flowerless plants that produce cones and seeds. The term gymnosperm literally means "naked seed," as gymnosperm seeds are not encased within an ovary. Rather, they sit exposed on the surface of leaf-like structures called bracts . ex - ginkgo
8 phylum arthrapoda
9 Sonar stands for SOund Navigation And Ranging. Sound propagation (usually underwater) used to navigate, communicate or detect objects on or under the water surface
10 Frequency is the number of occurrences of a repeating event per unit of time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. The period is the duration of time of one cycle in a repeating event, so the period is the reciprocal of the frequency.
unit of frequency - m⁻¹
Explanation: